Fatal error: Uncaught Error: Undefined class constant 'REQUESTTYPE_FE' in /homepages/45/d949538977/htdocs/schillerschule/index.php:19 Stack trace: #0 /homepages/45/d949538977/htdocs/schillerschule/index.php(21): {closure}() #1 {main} thrown in /homepages/45/d949538977/htdocs/schillerschule/index.php on line 19