Hello.
It's ok, thanks to your help, I have restored an old database.
I don't have any more errors when I check it
I still have a small question about the bookmarks.
I had made a screenshot to remember the reading percentage
If I change it in Calibre then do "Send to device" then disconnect and reconnect the Kobo, Calibre retrieves the old position from the Kobo
How do I force the changed position in Calibre to be sent to the Kobo?
Thanks in advance