Description of problem: Out of old habit, I ran this groupinstall command, and triggered a traceback. It looks like the group I'm trying to install doesn't exist anymore, but `groupinstall foo` doesn't trigger the same exception. [~] sudo dnf -y groupinstall "Fedora Packager" Dependencies resolved. Traceback (most recent call last): File "/bin/dnf", line 36, in <module> main.user_main(sys.argv[1:], exit_code=True) File "/usr/lib/python2.7/site-packages/dnf/cli/main.py", line 182, in user_main errcode = main(args) File "/usr/lib/python2.7/site-packages/dnf/cli/main.py", line 84, in main return _main(base, args) File "/usr/lib/python2.7/site-packages/dnf/cli/main.py", line 141, in _main ret = resolving(cli, base) File "/usr/lib/python2.7/site-packages/dnf/cli/main.py", line 160, in resolving base.do_transaction() File "/usr/lib/python2.7/site-packages/dnf/cli/cli.py", line 185, in do_transaction grp_diff = self._groups_diff() File "/usr/lib/python2.7/site-packages/dnf/cli/cli.py", line 145, in _groups_diff return self.group_persistor.diff() File "/usr/lib/python2.7/site-packages/dnf/persistor.py", line 273, in diff return _GroupsDiff(self._original, self.db) File "/usr/lib/python2.7/site-packages/dnf/persistor.py", line 170, in __init__ self.added, self.removed = _diff_dcts(db_old, db_new) File "/usr/lib/python2.7/site-packages/dnf/persistor.py", line 60, in _diff_dcts keys1 = set(dct1.keys()) AttributeError: 'NoneType' object has no attribute 'keys' [~] sudo dnf grouplist | grep Fedora Fedora Cloud Server Fedora Server Fedora Workstation Fedora Eclipse Version-Release number of selected component (if applicable): dnf-0.6.0-1.fc21.noarch
I will mark this as duplicate as both traceback looks same. Please update dnf package to latest update 0.6.1-1.fc21 *** This bug has been marked as a duplicate of bug 1130878 ***