Fedora 23 stop install new programs/updates

I'm using Fedora 23 in the last 2 months, and since yesterday DNF stop install or upgrade programs.

This is the error message I got in the Yum Extender - Powered by DNF:

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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)

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Other informations: Fedora 23, Mate desktop.
Enable repositories: fedora, updates, rpmfusion-free, rpmfusion-free-updates, rpmfusion-nonfree and rpmfusion-nonfree-updates

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