Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in D:\Apache24\www\api.print.nxytec.cn\back\vendor\gregwar\captcha\tests\CaptchaBuilderTest.php:8 Stack trace: #0 {main} thrown in D:\Apache24\www\api.print.nxytec.cn\back\vendor\gregwar\captcha\tests\CaptchaBuilderTest.php on line 8