[anacreon]

I have a new error message from Database check, which does NOT say the DB is corrupted, but:

Spoiler:

Résultat de l'exécution de la commande 'PRAGMA integrity_check' sur la base de données du dispositif Kobo:


*** in database main ***
On tree page 280227 cell 51: Rowid 485279 out of order
On tree page 443664 cell 2: Child page depth differs
On tree page 443664 cell 1: Child page depth differs
Page 276706 is never used
Page 443341 is never used
Page 443345 is never used
Page 443661 is never used
Page 443662 is never used
Page 443665 is never used
Page 443666 is never used
Page 443667 is never used
Page 443668 is never used
Page 443669 is never used
Page 443670 is never used
Page 443671 is never used
Page 443672 is never used
Page 443673 is never used
Page 443674 is never used
Page 443675 is never used
Page 443676 is never used
Page 443677 is never used
Page 443678 is never used
Page 443679 is never used
Page 443680 is never used
Page 443681 is never used
Page 443682 is never used
Page 443683 is never used
Page 443684 is never used
Page 443685 is never used
Page 443686 is never used
Page 443687 is never used
Page 443688 is never used
Page 443689 is never used
Page 443690 is never used
Page 443691 is never used
Page 443692 is never used
Page 443693 is never used
Page 443694 is never used
Page 443695 is never used
Page 443696 is never used
Page 443697 is never used
Page 443698 is never used
Page 443699 is never used
Page 443700 is never used
Page 443701 is never used
Page 443702 is never used
Page 443703 is never used
Page 443704 is never used
Page 443705 is never used
Page 443706 is never used
Page 443707 is never used
Page 443708 is never used
Page 443709 is never used
Page 443710 is never used
Page 443711 is never used
Page 443712 is never used
Page 443713 is never used
Page 443714 is never used
Page 443715 is never used
Page 443716 is never used
Page 443717 is never used
Page 443718 is never used
Page 443719 is never used
Page 443720 is never used
Page 443721 is never used
Page 443722 is never used
Page 443723 is never used
Page 443724 is never used
Page 443725 is never used
Page 443726 is never used
Page 443727 is never used
Page 443728 is never used
Page 443729 is never used
Page 443730 is never used
Page 443731 is never used
Page 443732 is never used
Page 443733 is never used
Page 443734 is never used
Page 443735 is never used
Page 443736 is never used
Page 443737 is never used
Page 443738 is never used
Page 443739 is never used
Page 443740 is never used
Page 443741 is never used
Page 443742 is never used
Page 443743 is never used
Page 443744 is never used
Page 443745 is never used
Page 443746 is never used
Page 443747 is never used
Page 443748 is never used
Page 443749 is never used
Page 443750 is never used
Page 443751 is never used
Page 443752 is never used
Page 443753 is never used
Page 443754 is never used
Page 443755 is never used
Page 443756 is never used

What is it about? Can I do anything before giving up altogether?
The only thing I did between my last check/save less than half an hour ago are

• harmonize one book (whose title I had modified in Calibre)
• send two books which had disappeared - yes I know a sign of problems
• update a couple of reading positions
• update all the metadata

Please advise.

EDIT: I forgot to say I also compressed the DB because I had a message similar to one for which davidfor recommended a DB compression.
When I disconnected Elipsa, the first screen was as if it was a new empty reader, but then it started a lengthy import of the content.
Then I had the usual charge your reader screen, and I restarted it - result:
* 9 books visible on home page, 11 in book list
* reading parameters 11 books/15,4 Mo
* technical information 21.8 Go available, so there are many invisible books present, but not all as it should be 21.2 Go available.