Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in C:\xampp\htdocs\OFFLINE\VulturAr\laravel6-php74\laravel\vendor\sebastian\diff\tests\Output\StrictUnifiedDiffOutputBuilderTest.php:23 Stack trace: #0 {main} thrown in C:\xampp\htdocs\OFFLINE\VulturAr\laravel6-php74\laravel\vendor\sebastian\diff\tests\Output\StrictUnifiedDiffOutputBuilderTest.php on line 23