On Sun, Sep 30, 2018, 5:27 PM Frantisek Zatloukal <fzatlouk@redhat.com> wrote:
Can you try to delete this file?
/var/lib/dnf/history.sqlite

Maybe try to backup that file first, it might be useful for tracking down and fixing that bug.

Sorry. You are right. It is always better to backup a file instead to remove it.

Ciao,
A.