Notice: Undefined index: controller in C:\xampp\htdocs\app\views\layouts\default.ctp on line 8

Notice: Undefined variable: javascript in C:\xampp\htdocs\app\views\layouts\default.ctp on line 13

Fatal error: Call to a member function link() on a non-object in C:\xampp\htdocs\app\views\layouts\default.ctp on line 13