Fatal error: Uncaught Error: Interface "Illuminate\Validation\DatabasePresenceVerifierInterface" not found in /opt/lampp/htdocs/forum/flarum/vendor/illuminate/validation/DatabasePresenceVerifier.php:9 Stack trace: #0 {main} thrown in /opt/lampp/htdocs/forum/flarum/vendor/illuminate/validation/DatabasePresenceVerifier.php on line 9