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
--
Dario Lesca
(inviato dal mio Linux Fedora 28 Workstation)