Forgive me if this is in the wrong place,.. as I cannot find a home for 'calendar' related issues. Currently running 128.4.3esr (64-bit) on ubuntu 24.01 release with all updates applied. Email and calendar have been working,.. what I have changed to break it I do not know For the last month or so I have had issues that I cannot dismiss any reminders,.. I have found the thunderbird console, but this alas does not give me any indication as to what the problem entry might be,.. I have seen threads with solutions etc.. but these all have other apparent causes. I have a route calendar,.. associated with my primary email address, and have linked in my gmail account and its calendar. As to which calendar event is the rogue one,.. I have no idea,..as it does not flag issues in the console. I have found the 'What went wrong? There was an unexpected type. This occurs often occurs with undefined or null values.' And run some of the code given in the console,.. but I have to confess,.. not sure what output is telling me.

I have wondered if exporting my entire calendar,.. then re-importing into a new database,. in the hope that this would act as a clean-up, or would this just take to 'bad data' with it, are there any clean-up tools I could use? Any help pointers will gratefully received.. KR