Description of problem:
Since last updates no way to use graphical interface

Version-Release number of selected component (if applicable):
yumex-dnf-4.1.6-1.fc23.noarch

How reproducible:
always

Steps to Reproduce:
1.just run yumx-dnf and try to install/update

2.
3.

Actual results:
g-io-error-quark: GDBus.Error:org.freedesktop.DBus.Python.AttributeError: Traceback (most recent call last):
  File "/usr/lib64/python3.4/site-packages/dbus/service.py", line 707, in _message_cb
    retval = candidate_method(self, *args, **keywords)
  File "/usr/lib/python3.4/site-packages/dnfdaemon/server/__init__.py", line 83, in newFunc
    rc = func(*args, **kwargs)
  File "/usr/share/dnfdaemon/dnfdaemon-system", line 537, in RunTransaction
    result = self.run_transaction()
  File "/usr/lib/python3.4/site-packages/dnfdaemon/server/__init__.py", line 564, in run_transaction
    self._check_gpg_signatures(to_dnl)
  File "/usr/lib/python3.4/site-packages/dnfdaemon/server/__init__.py", line 713, in _check_gpg_signatures
    result, errmsg = self.base.sigCheckPkg(po)
  File "/usr/lib/python3.4/site-packages/dnf/util.py", line 79, in __getattr__
    % (C.__name__, name))
AttributeError: 'Base' object has no attribute 'sigCheckPkg'
 (36)

Expected results:
standard upgrade/installation

Additional info:
dnf from a terminal works great