Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in C:\laragon\www\apidian-laravel-8-s3\vendor\mtownsend\request-xml\tests\RequestXmlTest.php:8 Stack trace: #0 {main} thrown in C:\laragon\www\apidian-laravel-8-s3\vendor\mtownsend\request-xml\tests\RequestXmlTest.php on line 8