jbond Posted December 3, 2013 Share Posted December 3, 2013 Hi everyone, I am new to prestashop and am using version 1.5.6.0. I have a live shop and seem to be facing some kind of bug with which I needed some urgent help. I noticed my shopping carts getting created 2 or sometimes 3 times with same number id value etc. In addition to this sometimes (not always) those duplicate carts create 2 orders exactly at the same time with same products etc despite paypal only charging once. This is very strange and doesn't happen on my test local installation, just on live shop. Anyone faced similar issue or can help with this? It's rather urgent as I now have customer receiving duplicate order emails with for example cart 71 creating orders 28 and 29. Also noticed that in 3 weeks I only had 1 abandoned cart and since last time this happened yesterday I now have 4 consecutive abandoned carts that go to orderstep0 but don't turn into orders. Please help. Cheers Link to comment Share on other sites More sharing options...
Dh42 Posted December 3, 2013 Share Posted December 3, 2013 I have never heard of this issue before. What kind of hosting do you have, do you have cloud hosting? Also can you access your php error logs and see if anything is being created. Link to comment Share on other sites More sharing options...
ibndawood Posted December 3, 2013 Share Posted December 3, 2013 Make sure no core code has been overridden. Then are u using a custom theme ? If yes, try disabling AJAX-cart. Now try. Link to comment Share on other sites More sharing options...
jbond Posted December 3, 2013 Author Share Posted December 3, 2013 (edited) Hi, Thanks for the replies so far. My hosting is not cloud, is normal hosting from IX web hosting. The theme is the default one. Not sure where to find the php error logs. Is that on my installation directory or on hosting? If it's on hosting I have never seen an option in cpanel to check logs. An order just got created from a customer who picked up an abandoned cart from earlier today. But as soon as the order was placed again 2 carts with same numbers appeared. Only change I can think of was a fix to the voucher code disappearing with paypal as per below references (but again same fix I have in local install and problem doesn't happen): http://www.prestashop.com/forums/topic/227224-voucher-box-not-appearing-in-ff/page-3 Change cart_voucher to cart_voucher2 in file /themes/default/shopping-cart.tpl Cheers, Edited December 3, 2013 by jbond (see edit history) Link to comment Share on other sites More sharing options...
Dh42 Posted December 3, 2013 Share Posted December 3, 2013 Can you take a couple of screen shots? You can access a simple error log in your cpanel, it is under the log section, it has a red exclamation point. Link to comment Share on other sites More sharing options...
jbond Posted December 3, 2013 Author Share Posted December 3, 2013 Hi, I've looked into the logs but no errors on my BO, just information. Please see attached screenshots of what I mean. Thank you so much for the help, I'm a bit desperate as this is causing me issues. Cheers Link to comment Share on other sites More sharing options...
Dh42 Posted December 3, 2013 Share Posted December 3, 2013 Are you running the ebay module by any chance? Link to comment Share on other sites More sharing options...
jbond Posted December 3, 2013 Author Share Posted December 3, 2013 No, not installed. It is installed in the dev local one but not the live shop. Cheers Link to comment Share on other sites More sharing options...
PrestaHeroes USA Posted December 3, 2013 Share Posted December 3, 2013 The only time I've seen anything 'remotely' like this is when shop owners would using different means delete test orders...this caused a additional products and other strange behaviors when adding to cart but I don't remember anything exactly described like this...I do not know if this is your situation or not...as dh42 stated..this is a very strange phenomenon. Link to comment Share on other sites More sharing options...
jbond Posted December 3, 2013 Author Share Posted December 3, 2013 Hi, no orders deleted apart from a couple ages ago (test orders), but this didn't happen then just now it does, and randomly too. Also the duplicate carts on BO are random and sometimes 1 others 2 others 2 as you can see from the screenshot. Very strange, don't know what to do. Any ideas..pleaseeee. Cheers Link to comment Share on other sites More sharing options...
Dh42 Posted December 3, 2013 Share Posted December 3, 2013 Looking at the orders that you posted, do they all happen with the standard shipping and paypal as the payment gateway? Link to comment Share on other sites More sharing options...
jbond Posted December 3, 2013 Author Share Posted December 3, 2013 Now that you mentioned yes. I only have paypal as payment. But there are other orders that went through fine without duplicating with the same combination (standard delivery and paypal). One thing that just came to mind is they both happened during a period where I had free delivery setup. So I lowered the free delivery to £1 and both had free shipping ( no fee added for shipping). But the multiple carts happen with free delivery or not, but orders duplicated only when customers not paying for delivery) Link to comment Share on other sites More sharing options...
jbond Posted December 3, 2013 Author Share Posted December 3, 2013 I've been trying to replicate problem in test local shop but doesn't happen. I deleted old carts, deleted orders, tried free shipping and all else I could think of, but no it only happens on live shop Link to comment Share on other sites More sharing options...
jbond Posted December 3, 2013 Author Share Posted December 3, 2013 Please don't give up on us yet, a little help pls. I'm still trying to work it out with no luck… all day spent on this now Link to comment Share on other sites More sharing options...
PrestaHeroes USA Posted December 4, 2013 Share Posted December 4, 2013 back office-->advanced parms-->configuration can you list the file differences ps finds? Link to comment Share on other sites More sharing options...
ibndawood Posted December 4, 2013 Share Posted December 4, 2013 Do you have a live URL for me to test and also the list of file differences ? Link to comment Share on other sites More sharing options...
jbond Posted December 4, 2013 Author Share Posted December 4, 2013 Hi, Got the list below, It's a big one: Missing files (2)modules/blockreinsurance/img/reinsurance-2-1.jpg modules/editorial/homepage_logo_1.jpg Updated files (482)error500.html admin4582/uploadProductFileAttribute.php admin4582/ajaxfilemanager/ajax_get_file_listing.php admin4582/autoupgrade/index.php admin4582/themes/default/template/controllers/index.php admin4582/themes/default/template/controllers/access/index.php admin4582/themes/default/template/controllers/access/helpers/index.php admin4582/themes/default/template/controllers/access/helpers/form/index.php admin4582/themes/default/template/controllers/addons_catalog/index.php admin4582/themes/default/template/controllers/addresses/index.php admin4582/themes/default/template/controllers/addresses/helpers/index.php admin4582/themes/default/template/controllers/addresses/helpers/form/index.php admin4582/themes/default/template/controllers/addresses/helpers/list/index.php admin4582/themes/default/template/controllers/attachments/index.php admin4582/themes/default/template/controllers/attribute_generator/index.php admin4582/themes/default/template/controllers/attributes/index.php admin4582/themes/default/template/controllers/attributes/helpers/index.php admin4582/themes/default/template/controllers/attributes/helpers/form/index.php admin4582/themes/default/template/controllers/attributes/helpers/list/index.php admin4582/themes/default/template/controllers/attributes_groups/index.php admin4582/themes/default/template/controllers/attributes_groups/helpers/index.php admin4582/themes/default/template/controllers/attributes_groups/helpers/form/index.php admin4582/themes/default/template/controllers/attributes_groups/helpers/list/index.php admin4582/themes/default/template/controllers/backup/index.php admin4582/themes/default/template/controllers/backup/download/index.php admin4582/themes/default/template/controllers/backup/helpers/index.php admin4582/themes/default/template/controllers/backup/helpers/list/index.php admin4582/themes/default/template/controllers/backup/helpers/view/index.php admin4582/themes/default/template/controllers/carrier_wizard/helpers/index.php admin4582/themes/default/template/controllers/carrier_wizard/helpers/form/index.php admin4582/themes/default/template/controllers/carrier_wizard/helpers/view/index.php admin4582/themes/default/template/controllers/carriers/index.php admin4582/themes/default/template/controllers/carriers/helpers/index.php admin4582/themes/default/template/controllers/carriers/helpers/form/index.php admin4582/themes/default/template/controllers/cart_rules/index.php admin4582/themes/default/template/controllers/cart_rules/product_rule.tpl admin4582/themes/default/template/controllers/cart_rules/helpers/index.php admin4582/themes/default/template/controllers/cart_rules/helpers/list/index.php 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js/tiny_mce/themes/advanced/skins/o2k7/table.css js/tiny_mce/themes/advanced/skins/o2k7/table.js js/tiny_mce/themes/advanced/skins/o2k7/template.css js/tiny_mce/themes/advanced/skins/o2k7/template.js js/tiny_mce/themes/advanced/skins/o2k7/ui.css js/tiny_mce/themes/advanced/skins/o2k7/ui_black.css js/tiny_mce/themes/advanced/skins/o2k7/ui_silver.css js/tiny_mce/utils/editable_selects.js js/tiny_mce/utils/form_utils.js js/tiny_mce/utils/mctabs.js js/tiny_mce/utils/validate.js modules/bankwire/controllers/index.php modules/bankwire/controllers/front/index.php modules/bankwire/views/index.php modules/bankwire/views/templates/index.php modules/bankwire/views/templates/front/index.php modules/bankwire/views/templates/hook/index.php modules/blockbestsellers/blockbestsellers.tpl modules/blockcart/blockcart-json.tpl modules/blockcategories/img/index.php modules/blockcategories/img/icon/index.php modules/blockcms/blockcms.tpl modules/blockcontact/blockcontact.css modules/blockcontact/blockcontact.php modules/blockcontact/index.php modules/blockcontactinfos/blockcontactinfos.php modules/blockcontactinfos/blockcontactinfos.tpl modules/blockcontactinfos/index.php modules/blockcustomerprivacy/blockcustomerprivacy.php modules/blocklayered/blocklayered-ajax-back.php modules/blocknewsletter/mails/en/newsletter_conf.html modules/blocknewsletter/mails/en/newsletter_verif.html modules/blockpermanentlinks/img/index.php modules/blockreinsurance/blockreinsurance.php modules/blockreinsurance/index.php modules/blockrss/img/index.php modules/blocksharefb/blocksharefb.php modules/blocksharefb/blocksharefb.tpl modules/blocksharefb/index.php modules/blocksocial/blocksocial.php modules/blocksocial/blocksocial.tpl modules/blocksocial/index.php modules/blocktags/blocktags.css modules/graphartichow/artichow/cache/Abel modules/graphartichow/artichow/cache/Albert modules/graphartichow/artichow/cache/Example-006 modules/homefeatured/homefeatured.css modules/mailalerts/mails/en/new_order.html modules/mailalerts/mails/en/new_order.txt modules/productcomments/js/jquery.textareaCounter.plugin.js modules/sendtoafriend/sendtoafriend.css modules/shopimporter/ajax.php modules/shopimporter/shopimporter.js modules/shopimporter/shopimporter.php pdf/footer.tpl pdf/invoice.tpl Link to comment Share on other sites More sharing options...
PrestaHeroes USA Posted December 4, 2013 Share Posted December 4, 2013 nothing obvious in the list above.. take a look in folder override/ using ftp... are there any overrides in there from a module you may have loaded? Link to comment Share on other sites More sharing options...
jbond Posted December 4, 2013 Author Share Posted December 4, 2013 Only one I did on override was for product extra tabs. The rest is only index.php files on a number of classes as per picture. Link to comment Share on other sites More sharing options...
jbond Posted December 4, 2013 Author Share Posted December 4, 2013 I'm desperate now, shop just did it again, luckily no duplicate order just cart as per image Link to comment Share on other sites More sharing options...
PrestaHeroes USA Posted December 4, 2013 Share Posted December 4, 2013 I don't know that I am helping much other than hand holding. Are you able to reproduce this error on your live shop? If so then I would methodically uninstall any change, retest to see if you can isolate problem to a module installation. Link to comment Share on other sites More sharing options...
Dh42 Posted December 4, 2013 Share Posted December 4, 2013 Hmm, I hate to say it, but I would try to upgrade to the latest version. Link to comment Share on other sites More sharing options...
jbond Posted December 4, 2013 Author Share Posted December 4, 2013 I am unable to replicate on live as it's so random as you could see from screenshots of orders and carts. I have been trying on the local version but that doesn't have the same problem, despite being a copy of prod , confused here. Slightly scared of upgrading as every time I did it before going live I had problems and had to restore and do a fresh install instead of upgrade. Stuck Link to comment Share on other sites More sharing options...
PrestaHeroes USA Posted December 4, 2013 Share Posted December 4, 2013 is it possible that your hosting provider (or you) turned on some cahce? Varnish? do you have any sort of cache defined in back office, i.e. file system, apc, memcache? Link to comment Share on other sites More sharing options...
jbond Posted December 4, 2013 Author Share Posted December 4, 2013 No cache is defined in the BO. see attached. Also this options are same as in local without the problem. Link to comment Share on other sites More sharing options...
ibndawood Posted December 4, 2013 Share Posted December 4, 2013 Hi Jbond, Even though it appears random to us there is no such thing as random behavior in programming unless it has artificial intelligence. We need to try and reproduce the bug and zero in on the common factors. Your problem looks critical and it is difficult to help without actually looking into the code, putting in break points, debugging, etc. Otherwise all of us can only keep suggesting based on our past experiences. If you wish I am glad to help you via skype. Thanks. Link to comment Share on other sites More sharing options...
PrestaHeroes USA Posted December 4, 2013 Share Posted December 4, 2013 No cache is defined in the BO. see attached. Also this options are same as in local without the problem. i.e. local, different hosting...so moot please take the time to contact your hosting provider to see if there is a cache turned on underneath your hosting account, i.e. something like varnish. also taking up ibndawood offer may prove fruitful. Link to comment Share on other sites More sharing options...
jbond Posted December 4, 2013 Author Share Posted December 4, 2013 Hi Jbond, Even though it appears random to us there is no such thing as random behavior in programming unless it has artificial intelligence. We need to try and reproduce the bug and zero in on the common factors. Your problem looks critical and it is difficult to help without actually looking into the code, putting in break points, debugging, etc. Otherwise all of us can only keep suggesting based on our past experiences. If you wish I am glad to help you via skype. Thanks. Thank you so much that would be great. I do agree there must be something there causing the issue and it's in quite a fundamental part. It is a tricky one for me as I am not a developer or am able to debug etc. I've sent you a pm with my Skypeid . Many thanks for the offer, speak soon. Cheers Link to comment Share on other sites More sharing options...
jzylbj Posted February 15, 2014 Share Posted February 15, 2014 I also meet the problem ,it makes me crazy,who have the solution for this?Please.... Link to comment Share on other sites More sharing options...
germyboy98 Posted February 18, 2014 Share Posted February 18, 2014 I'm also having this problem.. I had an order last night that showed up 3 times.. Did you find a fix? Link to comment Share on other sites More sharing options...
jbond Posted February 19, 2014 Author Share Posted February 19, 2014 I'm also having this problem.. I had an order last night that showed up 3 times.. Did you find a fix? Hi, in short no fix found. But the problem only happens to me when I set free shipping to start from £1 for example. So hasn't happened again as I haven't been doing free shipping. I do get many carts created for same customer and sometimes get 3 or 4 carts with same order number ??? Weird. I don't trust carts that much anymore as they act a bit random. Link to comment Share on other sites More sharing options...
BoKr Posted March 7, 2014 Share Posted March 7, 2014 Here comes the rain again.... Please have a brief look at the products in the given (splitted) orders. Fact is, our shop started doing the same xxx since we are on 1.5.6.2. Well, of course, many other things were changed in the shop but nothing I would relate to this behaviour. But on scrutiny, I noticed that Presta not only splits orders but also started sorting the articles in a certain way! More to the point, in each order I have only articles that derive from the old conventional manuall stock management and in each other one (we only happened to have doubled orders /splitted ones) articles that are managed by the advanced stock mangagement! So, this might be the origin of all these problems. We have articles in our shop that are managed manually and some that are mangaged by the advanced stock management. If an order consists of articles belong to a) and othders to Prestashop splits the order and sorts articles accordingly. What a shame. I bet if you got several stock houses you might get more than doubled/tripled oders and invoices If I am right I would be so happy to find a SOLUTION since we already made appointments for the upcoming weekend to migrate the shop! And I really would like to do sth else than that. cheers Boris Link to comment Share on other sites More sharing options...
brih Posted March 8, 2014 Share Posted March 8, 2014 Actually I did also have this problem. You should disable the shopping cart module in pages header, but only for the step in the order process where you see the double cart content (actually called order). I did that, and not it is not showing. This means though, that at this step, the trashcan icon doesnt work at this point, but I guess you can live with that. I you at this step try to delete from your cart, you will go back to the summary page. Try it out and see if that works. Link to comment Share on other sites More sharing options...
BoKr Posted March 8, 2014 Share Posted March 8, 2014 Ehm can you tell me whether this occured for you in 1.5.6.2 only and do you have any overrides installed that may interfere with the order process? I am aksing since I do not really understand the idea behind your solution but I am goint to try it. Anyway, I wonder really why only very few people have this problem. And moreover, I wonder where the official support is Link to comment Share on other sites More sharing options...
alwaysperplexed Posted March 8, 2014 Share Posted March 8, 2014 (edited) I found this thread today because this just happened today on my live shop. A customer placed one order and paid via Paypal but two orders have been generated in the shop BO with the same Paypal ID but two difference order numbers and invoice numbers. This has never happened before and nothing has been changed. I am still on 1.5.6.1 but as I said this has never happened before so I don't think that is the issue. I am more inclined to wonder if it is a bug associated with advanced stock management as it has also affected the stock ie there was an item with stock quantity of 2 but now there is 0 due to two orders being generated. Customer only placed one order for quantity 1 so stock is wrong now Or the shopping carts. I have looked at Customers > shopping carts and there are 6 shopping carts listed for this one customer - two for each of the three items purchased - and all with the exact same time stamp 16:30:26 and then a 7th shopping cart for $0 with time stamp 17:25:05 which is 20 mins after payment. Edited March 8, 2014 by alwaysperplexed (see edit history) 1 Link to comment Share on other sites More sharing options...
BoKr Posted March 9, 2014 Share Posted March 9, 2014 I do not know how we can get some one to look at this. I heard about ticket system but never use one. I cloned today my shop and created a sandbox paypal acc in order to run this culprit down. But it becomes clear now that ASM plays a role here. If so, then it might be a bug and then..... Prestashop we got a problem! Link to comment Share on other sites More sharing options...
alwaysperplexed Posted March 9, 2014 Share Posted March 9, 2014 (edited) Today someone placed an order on the shop and there is only one Paypal payment, one order, and one shopping cart ie a regular order with no problems. I also checked the shopping carts from the duplicate order yesterday,and as I said above there were 6 shopping carts for that order yesterday but now there are only 3 remaining! One for each instance of the "order" and one for $0.00 after checkout. I have ASM switched off for some months now as I did not like what it was doing in other areas (there was a problem with ASM where it was causing free shipping!) So I'm not sure how it can still be affecting my shop, but the stock is still being altered incorrectly ie for the duplicate order. Or why it was just that one order yesterday. Could something be happening if a customer keeps items in a shopping cart for long time? The timestamp on the shopping cart yesterday was 16:30 but they didn't actually checkout and pay until 17:05. Edit: one more thing I just noticed. The order numbers that were generated for the duplicate orders. All the orders now have random 9 character numbers generated by PS ok. But for the duplicate orders yesterday, one has 9 character number as normal but the other only has an 8 character number. Could something have gone wrong with the order generation process that caused the duplication to occur? Edited March 9, 2014 by alwaysperplexed (see edit history) Link to comment Share on other sites More sharing options...
Tuinkoken Posted May 19, 2014 Share Posted May 19, 2014 Hello, I have or had the exact same problem as you. I did some debugging myself and after that the first two orders went trough how they should, no duplicates. This is what I did: I entered debugging mode by setting define('_PS_MODE_DEV_', false); to true in config>defini.inc.php and I got the same error messages as in this thread: http://www.prestashop.com/forums/topic/297351-error-rijndael-key-assumed-rijndael-key/ I solved this error by adding the comma's like El Patron suggested in the second post. Since the problem started with me after installing a dutch iDeal payment module I first uninstalled it through the backoffice in PS. Then I also went into phpmyadmin an deleted all the data of this module I could find in the ps_configuration table. I turned cache off and freshly installed the module again. Like I said, the first two orders after this went through how they should, but this is a very small sample size. Hopefully this info will either help you (then it will be solved) or brings the both of us a step further in solving the issue. Cheers Link to comment Share on other sites More sharing options...
Tuinkoken Posted May 21, 2014 Share Posted May 21, 2014 Sadly I was to soon to judge. The problem definitely got better, because now some of the orders are duplicate instead of everyone. I noticed that my database is getting quite big and polacing an order will give a lot of queries end data writing isn't that correct? The last two orders where there went something wrong, the first I was busy adding a manual order and with the second there was another customer ordering at the same time. Can it be that the server s too busy and giving a database time-out? That might explain why sometimes the first of the duplicates doesn'thave an orderstatus and sometimes it goed to 'pending' (wich is a status that comes with the module) Anyone who can help with this? Link to comment Share on other sites More sharing options...
Tuinkoken Posted May 21, 2014 Share Posted May 21, 2014 what I also noticed is when an order gets duplicated the customer is always said to be an excisting customer even if it is a new customer Link to comment Share on other sites More sharing options...
Centio Posted September 6, 2014 Share Posted September 6, 2014 All of a sudden today I have the same issue. Found this post. So just my two cents ASM is not in use. iDeal (Dutch Payment) is installed quite a while ago Random double carts. Some create a duplicate ID, some don´t One order actually thinks that twice the amount of the order has to be payed Upgrade to 1.6 will not work as my theme is currently not working under 1.6, which is odd also cause a duplicate of default theme. Link to comment Share on other sites More sharing options...
printerink Posted September 7, 2014 Share Posted September 7, 2014 In regards to this cart issue I think it may have something to do with Cart ID and Order ID in php admin.., if the ps_cart ID is less than the ps_orders ID it does not synchronise correctly..., in previous prestashop versions I could change these in your MySQL database at the php admin:see below ALTER TABLE ps_orders AUTO_INCREMENT = 145; ALTER TABLE ps_cart AUTO_INCREMENT = 244; I used to do the above in my previous presta installation and it would continue on from those ID numbers but now in 1.5.4 it does it to start with..., i.e. the first cart ID then becomes 245 but then after a while reverts back to the previous cart ID before I altered table. Does anyone know how to reset entire Cart ID and Orders ID to synchronise correctly? Thanks in advance. Link to comment Share on other sites More sharing options...
printerink Posted September 7, 2014 Share Posted September 7, 2014 Just to add .. you have to find the highest Cart ID in Orders ID table and ALTER TABLE cart ID to an increment higher Link to comment Share on other sites More sharing options...
Tuinkoken Posted September 11, 2014 Share Posted September 11, 2014 In co-work with my payment module they now have an order created after the payment is confirmed. Up to now this seems to work good! Link to comment Share on other sites More sharing options...
Antakarana Posted September 11, 2014 Share Posted September 11, 2014 Hi, Same problema in our store... this is the first time I see this error. A paypal payment has generated 4 simultaneous exact orders that include the same paypal transaction ID.... I'm using prestashop 1.6.0.9 with the lastest modules updated.... Link to comment Share on other sites More sharing options...
Centio Posted September 12, 2014 Share Posted September 12, 2014 Well I ran through the duplicating orders and compared almost every bit of information in these orders to existing single orders. I was unable to find any difference that could hint to where the problem exists. Link to comment Share on other sites More sharing options...
Pluncker Posted November 3, 2014 Share Posted November 3, 2014 (edited) Same problem here (PS 1.6.0.9): 2 orders, same cart-id... Bankwire payment. Edited November 3, 2014 by Pluncker (see edit history) Link to comment Share on other sites More sharing options...
a_smith Posted January 21, 2015 Share Posted January 21, 2015 same problem ps 1.6.0.11 I am getting orders duplicated at random. This is going on for various shipping and payments methods I have this problem since 1.6.0.4 updated to 1.6.0.9 now updated to 1.6.0.11 and still have this issue. Duplicated shopping carts creates duplicated orders. Creation time is same for those orders... Link to comment Share on other sites More sharing options...
syrovidis Posted January 25, 2015 Share Posted January 25, 2015 I have the same problem. Yesterday it happened second time from total of 400 orders. Really don't know how to find where the problem is. Prestashop version 1.6.0.8. Hope someone will help. Link to comment Share on other sites More sharing options...
skacco Posted June 3, 2015 Share Posted June 3, 2015 I've the same problem with bankwire transfer and prestashop 1.6.0.13... APC installed in the server but no cache setting in backoffice.. someone have found a solution? Link to comment Share on other sites More sharing options...
eriknuds Posted October 22, 2015 Share Posted October 22, 2015 (edited) I experienced this first time yesterday while developing a new payment module, and I'm pretty sure I figured it out. In the BO, it seemed I had two carts with the same ID, and two equivalent orders with different ID's, but the database showed only one cart so the second was probably just the result of sql joining. But there were two orders on the cart, with the same items and carrier etc, but different order id and reference. I checked my web logs (IIS on my test system), and there were two requests made to the payment-success url, as I was browser (302) redirected back from the payment processor in the browser. Both had status 200, substatus 0, but the one that took the longest time had a win32 status of 64 - which indicates my browser (chrome) closed this one. The first request to finish had win32 status 0 as well, indicating successful return of the data. A quick google search reveals that this is a deliberate strategy by chrome (and maybe other browsers as well), to sometimes (don't know the exact algorithm it decides when) send two requests in parallel, with the intent of only keeping the result of the one that finish first, and closing the other connection. This fit my scenario. So when I'm redirected back to my shop from the payment provider, chrome decides to execute two GET requests simultaneously, and unless there is some way to avoid duplication two orders will be the result. Often (as I do in my payment module) you will do a CAPTURE of the amount, and second thread to attempt this will fail. This will prohibit the creation of two orders if such a mechanism exist - but it has another problem - the request that fails don't have more work to do, and will return with an error message. At least if it returns with a 200 status, chrome will be happy and display the result of the error request as it returned first, and not the other request which in the mean time is actually creating the valid order. When you don't have this mechanism in place to stop order number two, and the module just relay on PrestaShops validateOrder() function to preserve integrity , there seem to be a race condition that in some portion of the cases will not stop the second order from completing and linking to the same cart as the first one. This has probably very rearly been a problem before chrome started doing the double request trick in order to return requests quicker and thus enhance users browsing experience. To make matters worse, it seems that waiting for something like a web service or other IO when the module is completing the transaction and order sometimes can act as a synchronizer between the two competing requests, so that after the IO resource is available both requests continue very close in time, in almost parallel execution of the same code, thus increasing the risk of any race condition in the module or PrestaShop core to occur. If this seems to start to happen suddenly, it may be because chrome is pushing out a new version, a change in the browsers algorithm on when to start duplicate requests, or in the conditions the algorithm depends on (maybe it experienced the site as slow above some threashold in the past, multithreaded client on multiprocessor client computer, or whatever) or maybe something like IO scheduling changes in some OS, server, API or whatever is in use somewhere in the stack now has started to behave differently and the requests, waiting for access to the same resource or triggered by the same event, are more synchronized than before. These aspects can also explain why, for some, it seems to happen on just some systems. I can see that this would be a huge problem for any payment module that depend on redirects to a page which completes the order without having any external mutex like construct, something like a banks CAPTURE operation, to stop duplicate orders from being created...I haven't researched the PrestaShop code for the race condition that must be there, but hopefully someone will - I'm quite pressed for time at the moment... Edited October 22, 2015 by eriknuds (see edit history) 5 Link to comment Share on other sites More sharing options...
champlaseguin Posted November 11, 2015 Share Posted November 11, 2015 I have the same problem... any idea ? duplicate orders, different ID but same order number.. and double payment Link to comment Share on other sites More sharing options...
eriknuds Posted November 11, 2015 Share Posted November 11, 2015 Hi champlaseguin, I actually just filed this as a PrestaShop bug now, which I think it is: http://forge.prestashop.com/browse/PSCSX-7261 Either see what happens on the forge, add your comments to the bug or do something else to speed up bug fixing, or make sure your module handles the described scenario. Regards, Erik Knudsen Link to comment Share on other sites More sharing options...
champlaseguin Posted November 12, 2015 Share Posted November 12, 2015 today again the same error .... just sometimes, with some transactions... not with all here you can find the screenshots... as you can see just one second of difference.... then I need to refund one of the double payment different ID but same order number Link to comment Share on other sites More sharing options...
eriknuds Posted November 12, 2015 Share Posted November 12, 2015 (edited) You should check to make sure you actually got TWO payments, check the log or entries at your payment provider, _BEFORE_ you refund anything. You might have gotten just one payment - depending on the payment module in use. I don't know Stripe, but you should log in and check that you actually received two payments before refunding one (I think you actually got ONLY ONE payment!!!). Regards, Erik Knudsen Edited November 12, 2015 by eriknuds (see edit history) Link to comment Share on other sites More sharing options...
eriknuds Posted November 12, 2015 Share Posted November 12, 2015 (edited) You might want to go to http://forge.prestashop.com/browse/PSCSX-7261# and vote for the bug, and add a comment too if you wish. Regards, Erik Knudsen Edited November 12, 2015 by eriknuds (see edit history) Link to comment Share on other sites More sharing options...
champlaseguin Posted November 12, 2015 Share Posted November 12, 2015 Hi eriknuds... Stripe confirmed me that are two different payments with two differents Payments id... so I am sure... I had to refund one of them... Link to comment Share on other sites More sharing options...
eriknuds Posted November 12, 2015 Share Posted November 12, 2015 Ok. I don't know how the Stripe module handles the duplicate parallel redirect/request problem, and what you describe is one possible way it could fail, so you are probably right. You should report this to Stripe as well, perhaps, if they developed that payment module. Stripe too can implement their module in a way that the error won't occur, even though the prestashop ValidateOrder() race condition is probably also at fault here. Link to comment Share on other sites More sharing options...
eriknuds Posted November 12, 2015 Share Posted November 12, 2015 I see there are several Stripe modules available...which one do you use? Link to comment Share on other sites More sharing options...
champlaseguin Posted November 12, 2015 Share Posted November 12, 2015 I use: Stripe Pro v1.0 - by NTS do you think it is a problem from Stripe or from Stripe module developer ? I will report this to Stirpe module developer.... Link to comment Share on other sites More sharing options...
eriknuds Posted November 12, 2015 Share Posted November 12, 2015 The module developer should handle the double request issue, and they can't trust PrestaShops ValidateOrder() to do the checking as it has a race condition. Link to comment Share on other sites More sharing options...
champlaseguin Posted November 14, 2015 Share Posted November 14, 2015 I contacted the module developer, here the answer... what do you suggest ? Hi,Thanks for contacting us.Yes I understand this issue. Its related with browser (only Chrome from major browsers) get request performance on any redirection. So its not a bug from Stripe module. But if you want to use new version of this module with latest stripe libraries and features, its here:https://addons.prestashop.com/en/product.php?id_product=17856I hope Prestashop will take it as a major bug and resolve it asap for their newer versions.But if you want us to fix this on PS core files then we can put some hack in the validate order function to prevent the duplicate orders with an extra cost. (Not applicable for PS cloud)Let me know if you need any other support. Link to comment Share on other sites More sharing options...
eriknuds Posted November 14, 2015 Share Posted November 14, 2015 So the module developer thinks he doesn't have to handle perfectly legal http behavior that cause his module to create duplicate orders because it is almost only the most popular browser in the world that does this...interesting view. If the module is on addons I would give it the lowest rating possible as it is unusable and claim a refund and report it to prestashop so they can ban his module and preferably him as well. Even if prestashop fixes ValidateOrder() I'm not sure the module can be trusted as I suspect he doesn't properly check the validity of the payment after the redirect... Regards, Erik Knudsen Link to comment Share on other sites More sharing options...
eriknuds Posted November 14, 2015 Share Posted November 14, 2015 (edited) However if prestashop fixes the issue in ValidateOrder() his module might not create duplicate orders anymoe, though that doesn't mean it is safe from fraudulent attacks, and he would at least have to set PS compatibility for the module to after the PS version that solves the ValidateOrder() problem in any case. Edited November 14, 2015 by eriknuds (see edit history) Link to comment Share on other sites More sharing options...
mheumann_gs Posted December 14, 2015 Share Posted December 14, 2015 Hi, has anyone found a workaround for this problem yet? Even a patch for the ValidateOrder function or anything? Thanks, Michael. Link to comment Share on other sites More sharing options...
G0rG Posted December 21, 2015 Share Posted December 21, 2015 Hi everyone We got exactly the same problem as many of you. Randomly we got 2 orders from the same customer with the same amount, the same product and exactly the same date/time! In our case, the issue concerned only one paiement method with saferpay module. After many search and contact with the developer, we finally found in the access logs from server that our shop got 2 links to the confirmation page from the saferpay server. One with GET data and the other with POST data. So we put a delay on the confirmation module page for 2 seconde if the data came with the GET method. Maybe you will not have the same issue as us, but it could be a clue of why you get 2 orders with the same date/time! Link to comment Share on other sites More sharing options...
Mrfreez Posted March 7, 2016 Share Posted March 7, 2016 After having had the same error a ton of times on on our site www.patchwork-butik.dk, we at last found a solution. In the Validation.php file, we changed the line saying: if($cart->OrderExists() == 0) to if($cart->OrderExists() == 0 && Tools::getValue('callback') == "1") And we haven't had any problems since. Link to comment Share on other sites More sharing options...
mike999 Posted April 1, 2016 Share Posted April 1, 2016 Where do i find this Validation.php file ? Link to comment Share on other sites More sharing options...
Mrfreez Posted April 1, 2016 Share Posted April 1, 2016 Where do i find this Validation.php file ? Under the payment module that is causing the problems. I guess the precise position depends on the payment module, mine was here: /NAME-OF-SITE.COM/modules/[NAME OF PAYMENT MODULE]/controllers/front Link to comment Share on other sites More sharing options...
Jesus Arriaga Barron Posted April 28, 2016 Share Posted April 28, 2016 RESOLVED Hello everyone, I had this error in my PS 1.6 I have noticed that the problem is coming from the SMARTY pages... in order to avoid have duplicate order, I have disabled the SMARTY CACHE from Advanced Settings -> Performance -> Smarty -> Cache -> No I have tested before disable the smarty cache and my orders were being processed once. I hope this help you guys... Thanks 1 Link to comment Share on other sites More sharing options...
mike999 Posted April 29, 2016 Share Posted April 29, 2016 We found the problem at last. It was the payson module that made it. They have now upgraded it. And the new one seems to work fine. (As for now...) Link to comment Share on other sites More sharing options...
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