Fatal error: Uncaught Error: Interface 'Makaira\OxidConnectEssential\Rpc\HandlerInterface' not found in /www/shop/vendor/makaira/oxid-connect-essential/src/Rpc/Handler/ListLanguages.php:8 Stack trace: #0 {main} thrown in /www/shop/vendor/makaira/oxid-connect-essential/src/Rpc/Handler/ListLanguages.php on line 8