Fatal error: Uncaught Error: Interface "Illuminate\Contracts\Container\ContextualBindingBuilder" not found in E:\www\gsp_smart\webman\vendor\illuminate\container\ContextualBindingBuilder.php:8 Stack trace: #0 {main} thrown in E:\www\gsp_smart\webman\vendor\illuminate\container\ContextualBindingBuilder.php on line 8