App is not defined at HTMLButtonElement.onclick. The function App.vote() is not define. Where was this function supposed to be defined? And I can find App.vote() function in app.js Please, help. Thank you! 
App is not defined at HTMLButtonElement.onclick.
The function App.vote() is not define.
Where was this function supposed to be defined?
And I can find App.vote() function in app.js
Please, help. Thank you!
