Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in /home/clapsabo/test/vendor/symfony/form/Tests/Extension/Core/DataTransformer/DateIntervalTestCase.php:16 Stack trace: #0 {main} thrown in /home/clapsabo/test/vendor/symfony/form/Tests/Extension/Core/DataTransformer/DateIntervalTestCase.php on line 16