Fatal error: Uncaught RuntimeException: The configuration setting 'wgVectorClientPreferences' was already set by MediaWiki core or another extension, and cannot be set again by ESP. in /var/www/elderscrollsportal-de/wiki/includes/registration/ExtensionProcessor.php:872 Stack trace: #0 /var/www/elderscrollsportal-de/wiki/includes/registration/ExtensionProcessor.php(854): ExtensionProcessor->addConfigGlobal() #1 /var/www/elderscrollsportal-de/wiki/includes/registration/ExtensionProcessor.php(280): ExtensionProcessor->extractConfig2() #2 /var/www/elderscrollsportal-de/wiki/includes/registration/ExtensionRegistry.php(449): ExtensionProcessor->extractInfo() #3 /var/www/elderscrollsportal-de/wiki/includes/registration/ExtensionRegistry.php(314): ExtensionRegistry->readFromQueue() #4 /var/www/elderscrollsportal-de/wiki/includes/Setup.php(285): ExtensionRegistry->loadFromQueue() #5 /var/www/elderscrollsportal-de/wiki/includes/WebStart.php(92): require_once('...') #6 /var/www/elderscrollsportal-de/wiki/index.php(44): require('...') #7 {main} thrown in /var/www/elderscrollsportal-de/wiki/includes/registration/ExtensionProcessor.php on line 872