"Undefined" error on prestashop 1.5.6.2

[alexandra_b]

Hello!

Today I couldn't upload any picture on my web-store. It constantly appears undefined error. I tried to upload a picture to an old product and also to a new one but does not work. I tried on Firefox, IE and Chrome. All 3 failed.

 

Help?

Edited April 5, 2016 by alexandra_b (see edit history)

[presta4you.com]

Probably you have some problem with permision in your server. Check your php version and folders permisions.

[tuk66]

undefined looks like a JavaScript issue. Do you see an error in the browser console?

[Prestachamps]

 -You can try switching the Debug Mode on to get a more detailed error :

1: Connect to your server using a FTP client or using file-manager from cPanel

2: Go into ROOT/config folder and open the defines.inc.php file   (from cpanel usualy in public_html , or www folder) 

3: Modify the value of _PS_MODE_DEV_ from false to true , then Save the file.

4: While debug mode is enabled, try uploading the picture again, and check the error.

5: Once youﾒre done with all changes, switch _PS_MODE_DEV back to False so that itﾒs turned off in production mode.

 

- Regarding incorrect file permissions, you can check if the permissions of your prestashop folders are correct from back-office Menu: Advanced Parameters ->  Configuration Information  , Here the folders that have incorrect file permissions will be reported in the "YOUR CONFIGURATION" box.

Regards, Leo