Fatal error: Uncaught Error: Class "Symfony\Component\DependencyInjection\Dumper\Dumper" not found in /home/.sites/site4/wwwroot/web/ui/vendor/symfony/dependency-injection/Dumper/YamlDumper.php:37 Stack trace: #0 {main} thrown in /home/.sites/site4/wwwroot/web/ui/vendor/symfony/dependency-injection/Dumper/YamlDumper.php on line 37