Your controllers and views in the directory structure do not work with any changes made to them, because it is already an embedded application. and you are trying to edit code that is not available to run the application.
First, verify that the application is configured using the gulp command . If so, then you should use the command:
gulp --tasks
It will show all existing tasks that are performed in gulp. Now run the command
gulp default
With this, you can check the changes applied to the controllers in the application.
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