Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in D:\xampp\htdocs\api\web_ax_api\vendor\sebastian\diff\tests\Output\Integration\StrictUnifiedDiffOutputBuilderIntegrationTest.php:28 Stack trace: #0 {main} thrown in D:\xampp\htdocs\api\web_ax_api\vendor\sebastian\diff\tests\Output\Integration\StrictUnifiedDiffOutputBuilderIntegrationTest.php on line 28