Error Within MMM-My-Calendar module

[Johans]

Hi,
Have installed additional Calendar module, and i’m using the teamup calendars.
I have 4 different calendars, but only 3 are shown on the screen. Looking further I see following problem.

Connecting socket for: newsfeed
Starting module: newsfeed
Sockets connected & modules started ...
Launching application.
Create new calendar fetcher for url: http://ics.teamup.com/feed/xxxxx/xxxxx.ics - Interval: 300000
Create new calendar fetcher for url: http://ics.teamup.com/feed/xxxxx/xxxxx.ics - Interval: 300000
Create new calendar fetcher for url: http://ics.teamup.com/feed/xxxxx/xxxxx.ics - Interval: 300000
Create new calendar fetcher for url: http://ics.teamup.com/feed/xxxxx/xxxxx.ics - Interval: 300000
Create new news fetcher for url: http://www.nieuwsblad.be/rss/section/c1e533dc-ff1c-40fc-b48c-77ee686d54d4?intro=1 - Interval: 300000
Create new news fetcher for url: http://feeds.nieuwsblad.be/nieuws/snelnieuws - Interval: 300000
Downloading moon img with signal: BRING_MOON From URL: tycho.usno.navy.mil/gif/phase.gif
Whoops! There was an uncaught exception...
TypeError: curr.exdates[i].toISOString is not a function
    at Object.ical.objectHandlers.END (/home/pi/MagicMirror/modules/MMM-MyCalendar/vendor/ical.js/node-ical.js:44:44)
    at Object.handleObject (/home/pi/MagicMirror/modules/MMM-MyCalendar/vendor/ical.js/ical.js:267:41)
    at Object.parseICS (/home/pi/MagicMirror/modules/MMM-MyCalendar/vendor/ical.js/ical.js:308:20)
    at Request._callback (/home/pi/MagicMirror/modules/MMM-MyCalendar/vendor/ical.js/node-ical.js:11:24)
    at Request.self.callback (/home/pi/MagicMirror/node_modules/request/request.js:186:22)
    at emitTwo (events.js:126:13)
    at Request.emit (events.js:214:7)
    at Request. (/home/pi/MagicMirror/node_modules/request/request.js:1163:10)
    at emitOne (events.js:116:13)
    at Request.emit (events.js:211:7)
MagicMirror will not quit, but it might be a good idea to check why this happened. Maybe no internet connection?

I know which calendar is given the problem, but I can’t figure it out. I’m using these calendars since long time, and webaddress of the I-calendar feeds are correct, checked several times.

[Johans]

Solved, deleted kalendar en made new. Was the most easy way to do.

[sonicgoose]

I just started having the same issue. I’m using the MMM-MyCalendar module twice and one of them suddenly stopped working after I deleted some events. Both calendars are being pulled from an O365 ics url and I can’t comprehend how deleting some events would cause this to stop working.