ServerNotFoundError: Unable to find the server at accounts.google.com
I've had this problem before and the fix was to disable IPv6 on my computer. For some reason Google and IPv6 don't play well together.
If you're on a Mac, the command is:
sudo networksetup -setv6off wi-fiMake sure to turn it back on when you're done:
sudo networksetup -setv6automatic wi-fi