Fatal error: Uncaught Error: Class "Symfony\Component\Form\Test\FormIntegrationTestCase" not found in /var/www/crm_killing_ninja/vendor/symfony/form/Test/FormPerformanceTestCase.php:25 Stack trace: #0 {main} thrown in /var/www/crm_killing_ninja/vendor/symfony/form/Test/FormPerformanceTestCase.php on line 25