500 error in backend when clear cache, connect to sendcloud if NOT in DEBUG modus

[HansSolid]

I have a 500 error (unable to connect to the server 500 error) in the backend of Sendcloud (shipping module) if I try to connect to the Prestashop server.

If debug modus in ON, the request of Sendcloud goes fine. (???)

I also get a 500 error in the backend when I try to clear the cache.

The 500 error is not 100% persistent! (+ 80% of the time).

If I reload the page with the 500 error (1 or 2 times) the request to clear cache passes (about +90% of the time).

A couple of time I had a white screen and I was unable to login to the backend. (needed to change config file or do a complete backup)

Frontend keeps working ok, while having 500 errors in backend.

What I tried:

Contacted my hosting hosting provider and they researched the server.

They could not detect a server issue.

In the error logs they could see the following error:

------

error.log.1.gz:[Thu Apr 18 14:15:37.817149 2019] [error] [pid 23339] mod_proxy_fcgi.c(860): [client IP ADDRESS ] AH01071: Got error 'PHP message: PHP Fatal error:  Interface 'PrestaShop\\PrestaShop\\Core\\Grid\\Query\\DoctrineQueryBuilderInterface' not found in /data/sites/web/mywebsiteeu/www/src/PrestaShopBundle/Entity/Repository/RequestSqlRepository.php on line 38\n'

----

I checked and the file 'DoctrineQueryBuilderInterface.php' is in directory

 /www/src/Core/Grid/Query

RequestSqlRepository.php states on line 31 

"use PrestaShop\PrestaShop\Core\Grid\Query\DoctrineQueryBuilderInterface;"

 

When working in debug modus after a couple of trials, I finally got 1 debug error:

----

Compile Error: ContainerUt0lms3\appDevDebugProjectContainer::load(): Failed opening required '/data/sites/web/ website eu/www/var/cache/dev/ContainerUt0lms3/getPrestashop_Module_Zip_ManagerService.php' (include_path=‘/data/sites/web/ website eu/www/tools/htmlpurifier/standalone:/data/sites/web/otsudreamseu/www/vendor/pear/pear_exception:/data/sites/web/  website eu/www/vendor/pear/console_getopt:/data/sites/web/ website eu/www/vendor/pear/pear-core-minimal/src:/data/sites/web/ website eu/www/vendor/pear/archive_tar:.')

--- 

Aftre checking the forum I deleted

dev & prod directories and files in path  =>  /www/var/cache/

but this makes no difference.

 

I enabled and  disabled smart cache, but the error persists.

 

PrestaShop version: 1.7.4.2

Server information Linux 

Server software version: Apache

PHP version: 7.2.15

Memory limit: 256M

Max execution time: 300

Upload Max File size: 256M

Datbase:  MySQL version: 5.7.22-22

Anyone the encountered this problem yeT

Please can someone advice  or help me?

Thanks in advance!

 

 

[Eloise SendCloud]

Hi Hans,

 

We just found your review concerning the connection between Prestashop and SendCloud.

I'm sorry to hear that the connection doesn't work properly.

Could you indicate what your shop name is? In that case we can take a look at what is going wrong.

 

Thanks in advance. 

[HansSolid]

 

I don't think it's a Sencloud issue but a Prestashop issue.

 

Edited June 11, 2019 by HansSolid
seo (see edit history)

[cyssoo]

Hello,

Have you tried to rename or delete cache folders (/var/cache) ?

Source (french) : https://www.team-ever.com/problemes-et-resolutions-sous-prestashop/#mustdebug

[HansSolid]

35 minutes ago, cyssoo said:

Hello,

Have you tried to rename or delete cache folders (/var/cache) ?

Source (french) : https://www.team-ever.com/problemes-et-resolutions-sous-prestashop/#mustdebug

Thanks for your answer.

I did this already a couple of times, but makes no difference

[cyssoo]

Hum, sorry, thought it would help...

Could you try to update your PS version on a subdirectory ? I cannot reproduce (deleting /var/cache folders helped me on 1.7.4.2 and older 1.7 versions). 

[HansSolid]

What do you mean with updating on a subdirectory?

Edited June 11, 2019 by HansSolid
seo (see edit history)

[cyssoo]

I mean, copying your current Prestashop to a subfolder (database included) on your server, then upgrading it using this free module :

https://addons.prestashop.com/fr/migration-donnees-sauvegarde/5496-.html

Do not upgrade actual shop, please try on your computer or n a subfolder on your shop. At least, that's an upgrade, so you should save the shop before

[HansSolid]

On 4/23/2019 at 7:08 PM, cyssoo said:

Hum, sorry, thought it would help...

Could you try to update your PS version on a subdirectory ? I cannot reproduce (deleting /var/cache folders helped me on 1.7.4.2 and older 1.7 versions). 

Hello Cyssoo,

Your solution works!

Updated PS to the new version and everything works fine now.

thx a lot!