Fatal error: Uncaught TypeError: call_user_func_array(): Argument #1 ($callback) must be a valid callback, class _index does not have a method "lib" in /var/www/clients/client2/web3/web/vendor/mathsgod/r/class/Page.php:68 Stack trace: #0 /var/www/clients/client2/web3/web/vendor/mathsgod/r/class/Page.php(68): call_user_func_array() #1 /var/www/clients/client2/web3/web/vendor/mathsgod/f/src/Page.php(184): R\Page->__invoke() #2 /var/www/clients/client2/web3/web/vendor/mathsgod/r/class/App.php(72): F\Page->__invoke() #3 /var/www/clients/client2/web3/web/index.php(15): R\App->run() #4 {main} thrown in /var/www/clients/client2/web3/web/vendor/mathsgod/r/class/Page.php on line 68