Fatal error: Uncaught UnexpectedValueException: callback 'mwsInitComponents' is not callable in /var/www/html/includes/registration/ExtensionRegistry.php:585 Stack trace: #0 /var/www/html/includes/registration/ExtensionRegistry.php(333): MediaWiki\Registration\ExtensionRegistry->exportExtractedData(Array) #1 /var/www/html/includes/Setup.php(295): MediaWiki\Registration\ExtensionRegistry->loadFromQueue() #2 /var/www/html/includes/WebStart.php(85): require_once('/var/www/html/i...') #3 /var/www/html/index.php(50): require('/var/www/html/i...') #4 {main} thrown in /var/www/html/includes/registration/ExtensionRegistry.php on line 585