Fatal error: Uncaught Error: Class 'Illuminate\Database\Eloquent\Relations\Relation' not found in /mnt/volume_lon1_01/backend/adminseppi/vendor/illuminate/database/Eloquent/Relations/BelongsToMany.php:16 Stack trace: #0 {main} thrown in /mnt/volume_lon1_01/backend/adminseppi/vendor/illuminate/database/Eloquent/Relations/BelongsToMany.php on line 16