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