thinkphp Unable to load controller: Hello

In the case of this problem, take a look at:

(1). Whether the name of the controller is written, the controller's naming specification (don't forget the Class)

Naming rules for controllers
1, must adopt the big hump the naming rule
2. Must end with Controller.class.php
IndexController.class.php
LoginController.class.php

(2). Class Hellocontroller extends Controller see if this place is wrong.

You should be copying files so you should forget to change the class Xxxxcontroller to Hellocontroller.

thinkphp Unable to load controller: Hello