May 2025 events not loading

Hi, A user discovered that events from May 2 and beyond are not loading on our main calendar (or any calendar).

We also see this in our console when we try to replicate the error:

Uncaught TypeError: Cannot read properties of undefined (reading ‘getUTCMonth’)
at j.lib.LWCDate.getMonth (calendar.rev.1742713255.js:7:8187)
at j.lwCalendar.DayView.getMultiDayEventTimeRange (calendar.rev.1742713255.js:7:27661)
at j.lwCalendar.DayView.getEventTimeRange (calendar.rev.1742713255.js:7:28170)
at j.lwCalendar.DayView.formatEventObject (calendar.rev.1742713255.js:7:36267)
at j.lwCalendar.DayView.render (calendar.rev.1742713255.js:7:48993)
at HTMLBodyElement. (calendar.rev.1742713255.js:7:73216)
at HTMLBodyElement.dispatch (frontend.min.rev.1695539491.js:7:67864)
at g.handle (frontend.min.rev.1695539491.js:7:65859)
at Object.trigger (frontend.min.rev.1695539491.js:7:96311)
at HTMLBodyElement. (frontend.min.rev.1695539491.js:7:96937)

Is anyone else having the same problem? Does anyone have a solution? Thanks!

Hi Craig,

Sorry to hear this is giving you trouble. I see what you mean – it looks like the front-end calendar date logic is getting thrown off by an annually repeating event in the results (looks to be id:65709, “UConn ECE Spring and Full-year course evaluation period”).

We’ll work on reproducing this on our servers so we can file it for a core bug fix. In the meantime, if you want to try hiding that event, or re-creating it as a single (non-repeating) event, I bet that might do the trick as a stopgap. Hope this helps!

Let us know if we can help further with this, and thanks for bringing this to our attention.

Thanks, Karl. Turning off the recurrence did the trick! Our calendar now loads again. :slight_smile:

Glad that did the trick!

We’ve bundled a fix for the underlying issue here with our next release, LiveWhale 2.20.0 – this means that after your calendar’s next upgrade, you should be all set to resume using multi-day repeating events in this way. Thanks for bringing this to our attention.

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