Fatal error: Uncaught Error: Class 'Symfony\Component\Validator\Test\ConstraintValidatorTestCase' not found in /home/clapsabo/test/vendor/symfony/validator/Tests/Constraints/IbanValidatorTest.php:18 Stack trace: #0 {main} thrown in /home/clapsabo/test/vendor/symfony/validator/Tests/Constraints/IbanValidatorTest.php on line 18