Version-Release number of selected component:
yumex-dnf-4.3.3-4.1.fc26

Additional info:
reporter:       libreport-2.9.1
cmdline:        /usr/bin/python3 /usr/bin/yumex-dnf
crash_function: __call__
exception_type: GLib.GError
executable:     /usr/bin/yumex-dnf
kernel:         4.15.17-200.fc26.x86_64
runlevel:       N 5
type:           Python3
uid:            1000

Truncated backtrace:
Gio.py:172:__call__:GLib.GError: g-dbus-error-quark: GDBus.Error:org.freedesktop.DBus.Error.NoReply: Message recipient disconnected from message bus without replying (4)

Traceback (most recent call last):
  File "/usr/lib/python3.6/site-packages/yumex/__init__.py", line 1130, in on_activate
    install_mode=self.install_mode)
  File "/usr/lib/python3.6/site-packages/yumex/__init__.py", line 381, in __init__
    self._setup_arch()
  File "/usr/lib/python3.6/site-packages/yumex/__init__.py", line 510, in _setup_arch
    self.arch_filter = self.backend.get_filter('arch')
  File "/usr/lib/python3.6/site-packages/yumex/__init__.py", line 93, in backend
    return self.get_root_backend()
  File "/usr/lib/python3.6/site-packages/yumex/misc.py", line 158, in newFunc
    rc = func(*args, **kwargs)
  File "/usr/lib/python3.6/site-packages/yumex/__init__.py", line 116, in get_root_backend
    self._root_backend = yumex.dnf_backend.DnfRootBackend(self)
  File "/usr/lib/python3.6/site-packages/yumex/dnf_backend.py", line 172, in __init__
    dnfdaemon.client.Client.__init__(self)
  File "/usr/lib/python3.6/site-packages/dnfdaemon/client/__init__.py", line 549, in __init__
    DnfDaemonBase.__init__(self, system, ORG, INTERFACE)
  File "/usr/lib/python3.6/site-packages/dnfdaemon/client/__init__.py", line 207, in __init__
    (interface, self.daemon.GetVersion()))
  File "/usr/lib64/python3.6/site-packages/gi/overrides/Gio.py", line 172, in __call__
    None)
GLib.GError: g-dbus-error-quark: GDBus.Error:org.freedesktop.DBus.Error.NoReply: Message recipient disconnected from message bus without replying (4)

Local variables in innermost frame:
arg_variant: GLib.Variant('()', ())
signature: '()'
kwargs: {}
args: ()
self: <gi.overrides.Gio._DBusProxyMethodCall object at 0x7f1770132fd0>