Fatal error: Uncaught UnexpectedValueException: callback 'SemanticCompoundQueries::initExtension' is not callable in /var/www/html/includes/registration/ExtensionRegistry.php:544 Stack trace: #0 /var/www/html/includes/registration/ExtensionRegistry.php(231): ExtensionRegistry->exportExtractedData(Array) #1 /var/www/html/includes/Setup.php(168): ExtensionRegistry->loadFromQueue() #2 /var/www/html/includes/WebStart.php(90): require_once('/var/www/html/i...') #3 /var/www/html/index.php(44): require('/var/www/html/i...') #4 {main} thrown in /var/www/html/includes/registration/ExtensionRegistry.php on line 544