If you get the follow error, you can try this solution:
$ sudo mv /var/lib/dnf/history /var/tmp/. (from here) https://bugzilla.redhat.com/show_bug.cgi?id=1596540#c52
Then rerun dnf.
Work for me.
Thanks
Traceback (most recent call last): File "/usr/bin/dnf", line 58, in <module> main.user_main(sys.argv[1:], exit_code=True) File "/usr/lib/python3.7/site-packages/dnf/cli/main.py", line 179, in user_main errcode = main(args) File "/usr/lib/python3.7/site-packages/dnf/cli/main.py", line 64, in main return _main(base, args, cli_class, option_parser_class) File "/usr/lib/python3.7/site-packages/dnf/cli/main.py", line 99, in _main return cli_run(cli, base) File "/usr/lib/python3.7/site-packages/dnf/cli/main.py", line 123, in cli_run ret = resolving(cli, base) File "/usr/lib/python3.7/site-packages/dnf/cli/main.py", line 146, in resolving base.resolve(cli.demands.allow_erasing) File "/usr/lib/python3.7/site-packages/dnf/base.py", line 759, in resolve self._transaction = self._goal2transaction(goal) File "/usr/lib/python3.7/site-packages/dnf/base.py", line 656, in _goal2transaction ts.add_install(pkg, obs, reason) File "/usr/lib/python3.7/site-packages/dnf/db/group.py", line 256, in add_install ti_new = self.new(new, libdnf.transaction.TransactionItemAction_INSTALL, reason) File "/usr/lib/python3.7/site-packages/dnf/db/group.py", line 219, in new rpm_item = self._pkg_to_swdb_rpm_item(pkg) File "/usr/lib/python3.7/site-packages/dnf/db/group.py", line 210, in _pkg_to_swdb_rpm_item rpm_item = self.history.swdb.createRPMItem() File "/usr/lib/python3.7/site-packages/dnf/db/history.py", line 291, in swdb self._swdb = libdnf.transaction.Swdb(self.dbpath) File "/usr/lib64/python3.7/site-packages/libdnf/transaction.py", line 729, in __init__ this = _transaction.new_Swdb(*args) RuntimeError: Exec failed: no such table: main.trans_cmdline