Fatal error: Uncaught Error: Class 'Symfony\Component\Templating\Helper\Helper' not found in /var/www/alldocs/home/sdoehner/webtest/simplesamlphp_idp/vendor/symfony/framework-bundle/Templating/Helper/RequestHelper.php:27 Stack trace: #0 {main} thrown in /var/www/alldocs/home/sdoehner/webtest/simplesamlphp_idp/vendor/symfony/framework-bundle/Templating/Helper/RequestHelper.php on line 27