Hi Sven,
You are right: The database version of the Webpages were it works are differnent from the ones were it doesn't work:
Working:
Datenbanktyp
mysql
Datenbankversion
5.5.5-10.4.21-MariaDB
Datenbankzeichensatz
utf8_general_ci
Datenbankverbindungszeichensatz
utf8mb4_general_ci
Not working:
Datenbanktyp
mysql
Datenbankversion
5.5.5-10.4.22-MariaDB
Datenbankzeichensatz
utf8mb4_general_ci
Datenbankverbindungszeichensatz
utf8mb4_general_ci
Here the error message from the log File. I replaced the URL with xxx since this is a public posting.
[Wed Dec 15 00:49:20.477290 2021] [proxy_fcgi:error] [pid 372:tid 139636030437120] [client 178.115.243.125:56292] AH01071: Got error 'PHP message: PHP Warning: include_once(/var/www/vhosts/xxx.de/components/com_eventgallery/vendor/autoload.php): failed to open stream: No such file or directory in /var/www/vhosts/xxx.de/plugins/system/picasaupdater/picasaupdater.php on line 28PHP message: PHP Warning: include_once(): Failed opening '/var/www/vhosts/xxx.de/components/com_eventgallery/vendor/autoload.php' for inclusion (include_path='.:/opt/plesk/php/7.4/share/pear') in /var/www/vhosts/xxx.de/plugins/system/picasaupdater/picasaupdater.php on line 28', referer: http://xxx/administrator/index.php
[Wed Dec 15 00:49:23.618672 2021] [proxy_fcgi:error] [pid 8277:tid 139635946510080] [client 178.115.243.125:56456] AH01071: Got error 'PHP message: PHP Warning: include_once(/var/www/vhosts/xxx.de/components/com_eventgallery/vendor/autoload.php): failed to open stream: No such file or directory in /var/www/vhosts/xxx.de/plugins/system/picasaupdater/picasaupdater.php on line 28PHP message: PHP Warning: include_once(): Failed opening '/var/www/vhosts/xxx.de/components/com_eventgallery/vendor/autoload.php' for inclusion (include_path='.:/opt/plesk/php/7.4/share/pear') in /var/www/vhosts/xxx.de/plugins/system/picasaupdater/picasaupdater.php on line 28', referer: http://xxx/administrator/index.php?option=com_config
[Wed Dec 15 00:49:24.498883 2021] [proxy_fcgi:error] [pid 8277:tid 139636299003648] [client 178.115.243.125:56482] AH01071: Got error 'PHP message: PHP Warning: include_once(/var/www/vhosts/xxx.de/components/com_eventgallery/vendor/autoload.php): failed to open stream: No such file or directory in /var/www/vhosts/xxx.de/plugins/system/picasaupdater/picasaupdater.php on line 28PHP message: PHP Warning: include_once(): Failed opening '/var/www/vhosts/xxx.de/components/com_eventgallery/vendor/autoload.php' for inclusion (include_path='.:/opt/plesk/php/7.4/share/pear') in /var/www/vhosts/xxx.de/plugins/system/picasaupdater/picasaupdater.php on line 28PHP message: PHP Warning: include_once(/var/www/vhosts/xxx.de/components/com_eventgallery/vendor/autoload.php): failed to open stream: No such file or directory in /var/www/vhosts/xxx.de/plugins/content/eventgallery_multilangcontent/eventgallery_multilangcontent.php on line 45PHP message: PHP Warning: include_once(): Failed opening '/var/www/vhosts/xxx.de/components/com_eventgallery/vendor/autoload.php' for inclusion (include_path='.:/opt/plesk/php/7.4/share/pear') in /var/www/vhosts/xxx.de/plugins/content/eventgallery_multilangcontent/eventgallery_multilangcontent.php on line 45', referer: http://xxx/administrator/index.php?option=com_config
I also changed the php version to 8.0.13, but I get the same error messages.
Please let me know if you need more details.
Thanks again for the swift reply.
Alexander