Fatal error: Uncaught Error: Interface "Wikibase\Repo\Domains\Crud\Application\Validation\LanguageCodeValidator" not found in /var/www/html/w/extensions/Wikibase/repo/domains/crud/src/Application/Validation/LabelLanguageCodeValidator.php:8 Stack trace: #0 {main} thrown in /var/www/html/w/extensions/Wikibase/repo/domains/crud/src/Application/Validation/LabelLanguageCodeValidator.php on line 8