Fatal error: Uncaught Error: Call to a member function assign() on string in /var/www/html/PHP/Front/Challenge.php:38 Stack trace: #0 /var/www/html/PHP/Front/Challenge.php(26): Front\Challenge->Page() #1 /var/www/html/index.php(68): Front\Challenge->__construct() #2 /var/www/html/index.php(96): Index->__construct() #3 {main} thrown in /var/www/html/PHP/Front/Challenge.php on line 38