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/Array.php:15 Stack trace: #0 /var/www/alldocs/home/sdoehner/webtest/simplesamlphp_idp/vendor/twig/extensions/test/Twig/Tests/Extension/ArrayTest.php(11): require_once() #1 {main} thrown in /var/www/alldocs/home/sdoehner/webtest/simplesamlphp_idp/vendor/twig/extensions/lib/Twig/Extensions/Extension/Array.php on line 15