Fatal error: Uncaught Error: Interface "Psr\Http\Server\MiddlewareInterface" not found in /home/sardosne/flarum.sardos.net/vendor/flarum/messages/src/Http/Middleware/PopulateDialogWithActor.php:19 Stack trace: #0 {main} thrown in /home/sardosne/flarum.sardos.net/vendor/flarum/messages/src/Http/Middleware/PopulateDialogWithActor.php on line 19