Fatal error: Uncaught Error: Interface "Symfony\Component\DependencyInjection\Dumper\DumperInterface" not found in /home/.sites/site4/wwwroot/web/ui/vendor/symfony/dependency-injection/Dumper/Dumper.php:21 Stack trace: #0 {main} thrown in /home/.sites/site4/wwwroot/web/ui/vendor/symfony/dependency-injection/Dumper/Dumper.php on line 21