Fatal error: Uncaught Error: Class "Twig_Extension" not found in /home/appvanshi/public_html/admin_panel/vendor/egeloen/ckeditor-bundle/Twig/CKEditorExtension.php:21 Stack trace: #0 {main} thrown in /home/appvanshi/public_html/admin_panel/vendor/egeloen/ckeditor-bundle/Twig/CKEditorExtension.php on line 21