Fatal error: Uncaught Error: Interface "Laminas\Diactoros\Exception\ExceptionInterface" not found in /opt/lampp/htdocs/forum/flarum/vendor/laminas/laminas-diactoros/src/Exception/SerializationException.php:9 Stack trace: #0 {main} thrown in /opt/lampp/htdocs/forum/flarum/vendor/laminas/laminas-diactoros/src/Exception/SerializationException.php on line 9