angular.js - angularjs error message cannot be understood

Question

For example, read the manualhttps://code.angularjs.org/1.2.16/docs/guide/directive
I try the first example
http://jsbin.com/qaforiracopo/2/edit

"Error: [ng:areq] http://errors.angularjs.org/1.3.0-beta.1/ng/areq?p0=Controller&p1=not%20a%20function%2C%20got%20undefined
    at Error (native)
    at http://ajax.googleapis.com/ajax/libs/angularjs/1.3.0-beta.1/angular.min.js:6:456
    at Ab (http://ajax.googleapis.com/ajax/libs/angularjs/1.3.0-beta.1/angular.min.js:18:360)
    at Pa (http://ajax.googleapis.com/ajax/libs/angularjs/1.3.0-beta.1/angular.min.js:18:447)
    at http://ajax.googleapis.com/ajax/libs/angularjs/1.3.0-beta.1/angular.min.js:63:56
    at http://ajax.googleapis.com/ajax/libs/angularjs/1.3.0-beta.1/angular.min.js:49:197
    at r (http://ajax.googleapis.com/ajax/libs/angularjs/1.3.0-beta.1/angular.min.js:7:386)
    at B (http://ajax.googleapis.com/ajax/libs/angularjs/1.3.0-beta.1/angular.min.js:49:62)
    at g (http://ajax.googleapis.com/ajax/libs/angularjs/1.3.0-beta.1/angular.min.js:43:83)
    at g (http://ajax.googleapis.com/ajax/libs/angularjs/1.3.0-beta.1/angular.min.js:43:100)"

Answer 1

http://jsbin.com/qaforiracopo/3/edit

Answer 2

http://stackoverflow.com/questions/25927596/error-ngareq-http-errors-angularjs-org-1-2-25-ng-areq