TypeError: Argument 1 passed to Wikibase\Client\Hooks\ExtensionLoadHandler::getApiFormatReferenceSpec() must be of the type array, null given, called in /var/www/html/w/extensions/Wikibase/client/includes/Hooks/ExtensionLoadHandler.php on line 47 and defined in /var/www/html/w/extensions/Wikibase/client/includes/Hooks/ExtensionLoadHandler.php:74