Fatal error: Uncaught Error: Interface 'Laravel\SerializableClosure\Contracts\Serializable' not found in /data/htmlwww/laravel-system/vendor/laravel/serializable-closure/src/Serializers/Signed.php:9 Stack trace: #0 {main} thrown in /data/htmlwww/laravel-system/vendor/laravel/serializable-closure/src/Serializers/Signed.php on line 9