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