onLzrButtonClick'

When ever i try to start a game i get an error stating this

Message: Object doesn't support property or method 'onLzrButtonClick'
Details:
TypeError: Object doesn't support property or method 'onLzrButtonClick'

I don't know what this means and don't know how to fix it. I reset the game browser and my computer but i still get the error please help. Thank you.

This bug only affects me once and a while but it is annoying when it does affect me. I just wanna know how to stop it.