Fatal error: Uncaught Error: Class "Illuminate\Tests\Integration\Cache\MemcachedIntegrationTestCase" not found in C:\xampp\htdocs\r10csm\vendor\laravel\framework\tests\Integration\Cache\MemcachedCacheLockTestCase.php:11 Stack trace: #0 {main} thrown in C:\xampp\htdocs\r10csm\vendor\laravel\framework\tests\Integration\Cache\MemcachedCacheLockTestCase.php on line 11