Fatal error: Uncaught Error: Class "Illuminate\Cache\CacheLock" not found in D:\Apache24\www\qilu\back-end\vendor\laravel\framework\src\Illuminate\Cache\FileLock.php:5 Stack trace: #0 {main} thrown in D:\Apache24\www\qilu\back-end\vendor\laravel\framework\src\Illuminate\Cache\FileLock.php on line 5