Fatal error: Uncaught Error: Class 'Twig_Node_Expression_Call' not found in /home/sven/www/svenk.org/~koeppel/src/lib/Twig/Node/Expression/Test.php:11 Stack trace: #0 {main} thrown in /home/sven/www/svenk.org/~koeppel/src/lib/Twig/Node/Expression/Test.php on line 11