Issue Plesk 12.5.40 Update #54 breaks my MediaWiki

[detlefs]

Before the update the wiki site works fine.
After the update, I get the following error when calling the wiki:

2016-12-09 13:47:53 Error 213.144.13.110 500 GET / HTTP/1.1 414 Apache-SSL-Zugriff
2016-12-09 13:47:53 Warning 213.144.13.110 mod_fcgid: stderr: PHP Fatal error: Undefined class constant 'LIST_COMMA' in /var/www/vhosts/schneide-r.de/httpdocs/includes/Defines.php on line 34

All that happened is the Plesk update (which I also can't prevent. See other thread by me). I didn't cahnage anything in any config or setting

I couldn't find any information regarding this error via Google so I have not even a clue what the cause is, or how to fix it.

Any ideas anybody?

 

[Bitpalast]

It does not sound like a Plesk error to me. The error is a PHP error message and unrelated to the panel. The latest MediaWiki requires at least PHP 5.5.9. Is that or a newer version what your subscription setting is using? Was MediaWiki auto-updated?

 

[detlefs]

You are right, it sounds like a PHP error. Though, the PHP version didn't change, and also MediaWiki didn't change (no auto-update).
MediaWiki is on 1.28.0
PHP is on 5.5.9-1ubuntu4.20

So, really the only thing that changes to produce the error is the Plesk update...

 

[UFHH01]

Hi detlefs,

So, really the only thing that changes to produce the error is the Plesk update...

Such a conclusion can't be done, because:

• Plesk NEVER change/modify/edit PHP vendor packages
• Plesk NEVER changes content of a (sub)domain

Pls. consider to investigate, if your "MediaWiki", which has been updated between the "28.11.2016" and now ( release date of version 1.28 can be seen at for example => https://www.mediawiki.org/wiki/MediaWiki ) included some changes, that NEED manual interference, because of ( possible ) resets to default settings during the update/upgrade.
Pls. be informed, that IF you use "apache+nginx" on your domain, it might be necessary to use "Addidional NGINX directives", in case that ".htaccess" - files are used and pls. make sure, that both webservers ( apache AND nginx are active and running on your server ).
Consider to post configuration files from => "/var/www/vhosts/system/schneide-r.de/conf/", so that people willing to help you have something to start with for possible investigations.
Consider to post the current error - logs ( apache AND nginx ) from the corresponding domain ( => "/var/www/vhosts/system/uwefilthaut.de/logs/" ) and as well from your webservers => "/var/log/apache2" AND "/var/log/nginx".


Pls see and BOOMARK as well:

Plesk for Linux services logs and configuration files ( KB - article: 111 283 )​

 

[Bitpalast]

PHP is on 5.5.9-1ubuntu4.20

Is that displayed in the PHP version drop down box in the hosting settings of your subscription, e.g. "PHP 5.5.9-1unbuntu4.20" or do you see something different like "5.3 by OS vendor"?