Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in C:\laragon\www\infinity\vendor\mobiledetect\mobiledetectlib\tests\UserAgentTest.php:9 Stack trace: #0 {main} thrown in C:\laragon\www\infinity\vendor\mobiledetect\mobiledetectlib\tests\UserAgentTest.php on line 9