Fatal error: Uncaught Error: Class 'Symfony\Component\DependencyInjection\Extension\Extension' not found in /home/app/htdocs/ninja/vendor/symfony/http-kernel/Tests/Fixtures/ExtensionLoadedBundle/DependencyInjection/ExtensionLoadedExtension.php:17
Stack trace:
#0 {main}
thrown in /home/app/htdocs/ninja/vendor/symfony/http-kernel/Tests/Fixtures/ExtensionLoadedBundle/DependencyInjection/ExtensionLoadedExtension.php on line 17