Ember.js error in Webstorm in app.js in line import config from './config/environment';

I created an application using ember new applicationname And I created a project in Webstorm. Webstorm noticed that it can't resolve directory 'config' and file 'environment' in this code:

import config from './config/environment';

file applicationname/app.js

The application works fine, but why webstorm thinks that './config/environment' is incorrect path. I tried to change it to '../config/environment' webstorm thinks that it is correct path but then the application doesn't work.