Calendar module not showing Facebook birthdays

dzsoo

After a clean install of MagicMirror2 without any errors displayed, i wanted to set up my calendar to show Facebook upcoming birthdays like it was before reinstall, but now i got the following errors and nothing is present in my calendar:
PM2 log

TypeError: Cannot read property 'length' of undefined
    at Object.ical.objectHandlers.END (/home/pi/MagicMirror/modules/default/calendar/vendor/ical.js/node-ical.js:33:22)
    at Object.handleObject (/home/pi/MagicMirror/modules/default/calendar/vendor/ical.js/ical.js:287:41)
    at Object.parseICS (/home/pi/MagicMirror/modules/default/calendar/vendor/ical.js/ical.js:328:20)
    at Request._callback (/home/pi/MagicMirror/modules/default/calendar/vendor/ical.js/node-ical.js:11:24)
    at Request.self.callback (/home/pi/MagicMirror/node_modules/request/request.js:185:22)
    at Request.emit (events.js:182:13)
    at Request. (/home/pi/MagicMirror/node_modules/request/request.js:1157:10)
    at Request.emit (events.js:182:13)
    at Gunzip. (/home/pi/MagicMirror/node_modules/request/request.js:1079:12)
    at Object.onceWrapper (events.js:273:13)

The facebook link for the calendar is ok, i have already checked that. I can display google calendar, facebook events, but facebook birthdays are not functioning.
Does anyone else had this issue, or can help me?

dzsoo

After downgrading to Magic Mirror version 2.6.0 Facebook birthdays are working again.

CarstenD

Same problem after upgrading to 2.7.1 both calendars do not show any data anymore. Even disabling them does not bring up the default calendar.

pugsly

I will also throw my name in the ring to say that after 2.7.1 facebook birthdays are not working anymore.