Fatal error: Uncaught Error: Class 'Symfony\Component\HttpFoundation\Tests\ResponseTestCase' not found in /home/flexinettek/public_html/vendor/symfony/http-foundation/Tests/BinaryFileResponseTest.php:20 Stack trace: #0 {main} thrown in /home/flexinettek/public_html/vendor/symfony/http-foundation/Tests/BinaryFileResponseTest.php on line 20