Fatal error: Uncaught TypeError: implode(): Argument #2 ($array) must be of type ?array, bool given in /home/.sites/138/site1225078/web/Tests/ECDL_Standard/cg/frage.php:18
Stack trace:
#0 /home/.sites/138/site1225078/web/Tests/ECDL_Standard/cg/frage.php(18): implode('', false)
#1 {main}
  thrown in /home/.sites/138/site1225078/web/Tests/ECDL_Standard/cg/frage.php on line 18