Fatal error: Uncaught Error: Class 'Symfony\Component\HttpFoundation\Response' not found in /var/www/alldocs/home/sdoehner/webtest/simplesamlphp_idp/lib/SimpleSAML/HTTP/RunnableResponse.php:17 Stack trace: #0 {main} thrown in /var/www/alldocs/home/sdoehner/webtest/simplesamlphp_idp/lib/SimpleSAML/HTTP/RunnableResponse.php on line 17