Google adwords 404 error?

When I was using Google adwords to do some keyword research, at around 8:20pm, i saw this error.

What could make this happen? Sure the index page is deleted or something.

But when I am writing this post and check it again, it is back to normal.

Anyway, I have the screenshot, in case somebody lost money in this minute, can get evidence from me. However, keep in mind it is copyrighted :)

LOL.