Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in /home/clapsabo/test/vendor/symfony/form/Tests/Extension/Validator/ValidatorExtensionTest.php:17 Stack trace: #0 {main} thrown in /home/clapsabo/test/vendor/symfony/form/Tests/Extension/Validator/ValidatorExtensionTest.php on line 17