Fatal error: Uncaught Error: Class "Illuminate\Support\Fluent" not found in /opt/lampp/htdocs/forum/flarum/vendor/illuminate/database/Schema/ForeignKeyDefinition.php:15 Stack trace: #0 {main} thrown in /opt/lampp/htdocs/forum/flarum/vendor/illuminate/database/Schema/ForeignKeyDefinition.php on line 15