注入控制器时角度模块注入错误

I am new to AngularJS and facing a problem injecting controller to an angular app. I am trying to build a single page application where the user can navigate through the pages of a particular application form. While the code for the controllers was in the same JS file, it was working fine. But moving the controllers to a separate file(as in this case, 'js/controllers/pagecontroller.js') is throwing the error below.I am new to AngularJS and facing a problem inje