Comment 55 for bug 1945368

(In reply to John Bieling (:TbSync) from comment #47)
> I am lost. We need to split this bug into "I am using google provider" and "I am not using google provider".

I can see there is a valid point to that. But it seems likely the original problem for those using google was the addon could not update because it was not ready when version 91 was released. Getting the addon updated and recreating the calendar seems to work.

So the real issue is what happened to the 'Home' calendar when it appears to be blank.

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> @Anje: The text log shows you are using google, removing all google calendars and the google provider and starting from scratch does not fix it for you?

Prior to intalling 91* - I made sure the 'Provider for Google Calendar' addon update option 'On' was selected because if default is selected then updates do not occur. All updates used to occur by default, but this seemed to all change in version 78 and those auto updates stopped. So user just needs to set it to On before updating. So google provider addon updated and all was ok - I just got a couple of prompts to logon by google and allow Thunderbird access. There was no need to do anything to my google calendar.
For those who did not get the auto update for the provider addon it caused a problem. Updating the addon and recreating the google calendar would sort out that problem.

I would suggest major new releases are not released if dependent on specific addons like Provider for Google Calendar are not compatible at that same point in time or come to some arrangement where it is incorporated like Lightning Calendar.

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> The image log shows you are using at least one incompatible add-on (the error in implementations.js at the top), are you able to see which one? (click on the filename, it should open in an editor, if you cannot make anything out if it, please post that file here in full length).

The incompatible addon is mail merge which is not in my list of addons, so it is probably got some residual files.
I presented some error console data because it is just as useful to see what was reported even if all went ok.

I am reporting problems experienced by people in Support Forums.
I decided to install 91.1.0 and run to see if I could reproduce the error with the Home Calendar or Google or both. Then perhaps I would have error console data etc.
However, the google addon updated just fine and I just got presented with a new profile, so had to point it to the correct one - no worries. Then seemed to lose the session with Google and was prompted to send password again - all is saved, so no idea what happened.
REstarting next day all is still ok.

But the point is - in my case - no calendar data was lost. I could not reproduce the same error as reported in this bug.
So all info I'm relaying is being gleaned from the Support Forum.