Modern Events - Unable to edit events

[Lee Stevens]

When trying to create a new or edit an existing event, I get presented with the error message below

"This link is not valid. Check the link and try again"

Anyone seen this before and know a fix?

[#2]

Which data are you adding to the event using the event page? I have not seen this problem before

[#3]

Hi,

No special data. I literally just added the event.

I have not added any columns or amend the 'Events' content type. 

I have tried creating a second calendar (list), which appears on the events list drop down and same issue.

I think there is potentially a bug in there somewhere with this list, as I have spun up another comms site and no problems whatsoever.