Error when marking tasks as complete

[Elaborendum]

I'm using Tasks.org as the task app, but lately, every time I complete a task I get a notification from DecSyncCC that it failed to delete something in a directory. Clicking on the notification just opened the app, and due to the length of the path, I never got to see what was failing to delete.

But even more recently, the notification is instead "open failed: ENOENT (No such file or directory)" every time I complete a task.

Also, when seeing the tasks in Thunderbird, various completed tasks also show up as incomplete. Disabling the task lists on DecSyncCC and enabling them again doesn't seem to have any effect on anything either.

Update: After syncing it with Syncthing once again, I now get "Missing file /path/" and "Failed to touch /path/" notifications instead.

[hynow]

I am having similar issues. Are you still experiencing the errors and/or have any additional insights over these last couple months?

[Elaborendum]

Every time I mark a task as completed. Although some other messages may have also appeared when doing other things, but I can't remember them.

[Elaborendum]

I have now checked, the error messages also appear when changing the name of a task.