Fatal error: Uncaught Error: Class 'Symfony\Component\VarDumper\Test\VarDumperTestCase' not found in /home/app3/public_html/service/vendor/symfony/var-dumper/Tests/CliDumperTest.php:21 Stack trace: #0 {main} thrown in /home/app3/public_html/service/vendor/symfony/var-dumper/Tests/CliDumperTest.php on line 21