Memcache error: No servers added to memcache connection

[Jack01]

Hello, i'm tuning a PrestaShop installation, and i found this error in the error_log:

[14-Mar-2017 15:14:25 UTC] PHP Warning:  Invalid argument supplied for foreach() in /home/cp22z7i2/public_html/classes/cache/CacheMemcache.php on line 52
[14-Mar-2017 15:14:26 UTC] PHP Warning:  Memcache::getextendedstats(): No servers added to memcache connection in /home/cp22z7i2/public_html/classes/cache/CacheMemcache.php on line 50

that corresponds to:

       $all_slabs = $this->memcache->getExtendedStats('slabs');

        foreach ($all_slabs as $server => $slabs)
        {

I have my configuration in BO like this:

 

 

How do I have to configure memcache in order to work properly?

 

Or is this just a warning that I can ignore?

 

Thanks.

[rocky]

You need to click "Add a server" and enter the IP addresses and ports you want to bind, e.g. 127.0.0.1:11211.

[Knowband Plugins]

Please take a look at the following link, it might help you fix the second issue in the error_log:

 

https://github.com/akirk/php-ratelimiter/issues/1

 

Regarding the first issue in the error_log (i.e. Wrong Invalid argument supplied for foreach) you can apply an IF statement. For example:

 

if ($all_slabs) {



--- Foreach loop goes here ---



}