Feature request: for "Unknown Tag record key: 1004" errors, print the tag

Sync is failing. Popup: "Sync error. See message log for details", with status line: "Unable to update note. Invalid note structure : :EDAMUserException: ENML_VALIDATION parameter=Element type "header" must be declared." I understand that one possible cause is a tags mismatch between NixNote2 and Evernote. I have over 100 tags, have added some both in Evernote and NixNote2, as well as (IIRC) editing some tags.
The message log includes many: ERROR 2021-10-01 09:56:48.071 ( sql/tagtable.cpp @ 395 ) Unknown Tag record key: 1004

Requested feature: please indicate which tag is unknown, not present, or is a mismatch, or whatever other hints for debugging are available. Indicating which note(s) have issues might also be helpful.

Expected vs. actual behavior

Expected: message log gives some hint as to which tag is unknown. Actual: many instances of the same message: ERROR 2021-10-01 09:56:48.071 ( sql/tagtable.cpp @ 395 ) Unknown Tag record key: 1004

Steps to reproduce the problem (or log file)

Don't know how I made it happen. I have over 100 tags, have added some both in Evernote and NixNote2, as well as (IIRC) editing some tags. I have notes with conflicts. Messages.log attached. messages.log

Specifications

NixNote 2.0.2

robert7 / nixnote2