org-gcal calendar id is nil, so API request fails

[taylor-gl]

I'm trying to set up the google calendar layer for spacemacs. Even though my calendar id is set like this in my .spacemacs file:

(setq org-gcal-file-alist '(("[MY-CALENDAR-ID]@group.calendar.google.com" . "~/Dropbox/emacs/calendar.org")))
I get an error like this when I try to test out adding a calendar event by capturing from calfw:

condition-case: Before first headline at position 3045 in buffer *cfw-calendar* REQUEST [error] Error (error) while connecting to https://www.googleapis.com/calendar/v3/calendars/nil/events.

REQUEST [error] Error (error) while connecting to https://www.googleapis.com/oauth2/v3/token. (error http 404)

deferred error : (error "Got error 404: (error http 404)") deferred error : (error "Got error 401: (error http 401)")

I don't know why it's failing, but it looks like the word nil is being put into the url where the ID should go. Am I doing something wrong? Or is this an issue for anyone right now?