Fatal error: Uncaught Error: Interface "Illuminate\Contracts\Container\ContextualBindingBuilder" not found in I:\www\frameworks\Laravel\vendor\laravel\framework\src\Illuminate\Container\ContextualBindingBuilder.php:9 Stack trace: #0 {main} thrown in I:\www\frameworks\Laravel\vendor\laravel\framework\src\Illuminate\Container\ContextualBindingBuilder.php on line 9