Fatal error: Uncaught Error: Interface "Illuminate\Contracts\Database\Eloquent\Castable" not found in E:\www\gsp_smart\webman\vendor\illuminate\database\Eloquent\Casts\AsCollection.php:9 Stack trace: #0 {main} thrown in E:\www\gsp_smart\webman\vendor\illuminate\database\Eloquent\Casts\AsCollection.php on line 9