Fatal error: Uncaught TypeError: call_user_func_array(): Argument #1 ($callback) must be a valid callback, no array or string given in /www/htdocs/v094609/bukmedia/alte-zeitungen-kaufen-api/code/lib/Router.php:289 Stack trace: #0 /www/htdocs/v094609/bukmedia/alte-zeitungen-kaufen-api/public/index.php(52): Router::dispatch() #1 {main} thrown in /www/htdocs/v094609/bukmedia/alte-zeitungen-kaufen-api/code/lib/Router.php on line 289