Fatal error: Uncaught Error: Class 'Twig_Extension' not found in /var/www/alldocs/home/sdoehner/webtest/simplesamlphp_idp/vendor/twig/extensions/lib/Twig/Extensions/Extension/Intl.php:12 Stack trace: #0 {main} thrown in /var/www/alldocs/home/sdoehner/webtest/simplesamlphp_idp/vendor/twig/extensions/lib/Twig/Extensions/Extension/Intl.php on line 12