Fatal error: Uncaught Error: Class 'Twig_Extension' not found in /home/eberhardschwarze/public_html/vendor/friendsofsymfony/http-cache-bundle/src/Twig/CacheTagExtension.php:19 Stack trace: #0 {main} thrown in /home/eberhardschwarze/public_html/vendor/friendsofsymfony/http-cache-bundle/src/Twig/CacheTagExtension.php on line 19