cfw:open-ical-calendar Wrong number of arguments

[elig0n]

When running M-x cfw:open-ical-calendar :

funcall-interactively: Wrong number of arguments: #[(url) "ŠÂÃÄÅÆÇÈ#C$ÉÊ	!!*‡" [url cp cfw:create-calendar-component-buffer :view month :contents-sources cfw:ical-create-source "ical" "#2952a3" switch-to-buffer ...] 8 ("/home/user/.emacs.d/elpa/calfw-ical-20150703.819/calfw-ical.elc" . 7374) nil], 0

I'm using spacemacs

[mtekman]

You need to put an url as the only argument, and call it non-interactively