Fatal error: Uncaught Error: Class 'think\Service' not found in D:\php\WWW\xhqmzzwatdqc.cccf.net\vendor\topthink\framework\tests\AppTest.php:17 Stack trace: #0 {main} thrown in D:\php\WWW\xhqmzzwatdqc.cccf.net\vendor\topthink\framework\tests\AppTest.php on line 17