( ! ) Fatal error: Interface 'Illuminate\Contracts\Database\Eloquent\Castable' not found in /var/www/exam_ITR_dev/vendor/laravel/framework/src/Illuminate/Database/Eloquent/Casts/AsCollection.php on line 9
Call Stack
#	Time	Memory	Function	Location
1	0.0006	404520	{main}( )	.../AsCollection.php:0