Fatal error: Uncaught Error: Interface "Illuminate\Contracts\Events\Dispatcher" not found in C:\mywamp\sites\allsite\calcomposer\vendor\laravel\framework\src\Illuminate\Events\Dispatcher.php:15 Stack trace: #0 {main} thrown in C:\mywamp\sites\allsite\calcomposer\vendor\laravel\framework\src\Illuminate\Events\Dispatcher.php on line 15