Fatal error: Uncaught Error: Interface "Illuminate\Contracts\Support\Jsonable" not found in C:\AppServ\Apache\2.4.58\htdocs\sets\vendor\laravel\framework\src\Illuminate\Support\MessageBag.php:11 Stack trace: #0 {main} thrown in C:\AppServ\Apache\2.4.58\htdocs\sets\vendor\laravel\framework\src\Illuminate\Support\MessageBag.php on line 11