Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home/blacksilzu/symfony/my_project_dir/vendor/symfony/maker-bundle/src/Test/MakerTestCase.php:21 Stack trace: #0 {main} thrown in /home/blacksilzu/symfony/my_project_dir/vendor/symfony/maker-bundle/src/Test/MakerTestCase.php on line 21