Fatal error: Uncaught TypeError: call_user_func_array(): Argument #1 ($callback) must be a valid callback, class PageController does not have a method "index" in /home/satap/public_html/core/App.php:86 Stack trace: #0 /home/satap/public_html/public/index.php(35): App->run() #1 {main} thrown in /home/satap/public_html/core/App.php on line 86