Can't discover local-gcal pair: InvalidXMLResponse("Couldn't find home-set.")

[welcomeflan]

After setting up google API and attempting to discover a pair between local khal calendar and google calendar, I successfully got a token, then it gives me this:

Discovering collections for pair khal_pair_1
swcal:

• "private"
• "swingwheatcal"
  gcal:
• "christmasinhollis@gmail.com" ("Paul Humphries")
  warning: No collection "private" found for storage gcal.
  Should vdirsyncer attempt to create it? [y/N]: y
  error: The server returned something vdirsyncer doesn't understand. Error message: InvalidXMLResponse("Couldn't find home-set.")