Fatal error: Uncaught Error: Class "Illuminate\Support\Collection" not found in D:\Apache24\www\baojie\back\vendor\laravel\framework\src\Illuminate\Database\Eloquent\Collection.php:13 Stack trace: #0 {main} thrown in D:\Apache24\www\baojie\back\vendor\laravel\framework\src\Illuminate\Database\Eloquent\Collection.php on line 13