Uncaught TypeError: Cannot call method 'Pa' of undefined

Question

Hi I am receiving this error in Google Play Music which is causing elements on the page such as hitting the play button or switching songs to become unresponsive. I have narrowed it down to recieving this error every time I click on an unresponsive part of the page. No clue what this could mean, any help? Thanks!

http://imgur.com/a/AsCmr

Answer 1

In your second image, you can see that the error is thrown in E.BI

And first image shows that E.BI contains:

b=this.Re().Pa().Xb()

The problem is that method Re of this returns undefined . And, since undefined has no properties, attempting to call its method Pa produces an error.