Version-Release number of selected component:
dnfdragora-gui-1.0.1-6.git20170505.2a3b056.fc27

Additional info:
reporter:       libreport-2.9.1
cmdline:        /usr/bin/python3 /usr/bin/dnfdragora-updater
crash_function: _handle_dbus_error
exception_type: dnfdaemon.client.DaemonError
executable:     /usr/bin/dnfdragora-updater
kernel:         4.13.0-0.rc6.git4.1.fc28.x86_64
runlevel:       N 5
type:           Python3
uid:            1000

Truncated backtrace:
__init__.py:242:_handle_dbus_error:dnfdaemon.client.AccessDeniedError: Session is not authorized (36)

Traceback (most recent call last):
  File "/usr/lib/python3.6/site-packages/dnfdaemon/client/__init__.py", line 361, in Lock
    return self._run_dbus_async('Lock')
  File "/usr/lib/python3.6/site-packages/dnfdaemon/client/__init__.py", line 293, in _run_dbus_async
    result = self._get_result(data)
  File "/usr/lib/python3.6/site-packages/dnfdaemon/client/__init__.py", line 277, in _get_result
    self._handle_dbus_error(user_data['error'])
  File "/usr/lib/python3.6/site-packages/dnfdaemon/client/__init__.py", line 250, in _handle_dbus_error
    raise DaemonError(str(err))
dnfdaemon.client.DaemonError: g-io-error-quark: GDBus.Error:org.baseurl.DnfSystem.AccessDeniedError: Session is not authorized (36)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/bin/dnfdragora-updater", line 25, in <module>
    dnfdragora.updater.Updater().main()
  File "/usr/lib/python3.6/site-packages/dnfdragora/updater.py", line 156, in main
    self.__tray.run(self.__main_loop())
  File "/usr/lib/python3.6/site-packages/dnfdragora/updater.py", line 151, in __main_loop
    self.__get_updates()
  File "/usr/lib/python3.6/site-packages/dnfdragora/updater.py", line 117, in __get_updates
    return self.__get_updates_func(False)
  File "/usr/lib/python3.6/site-packages/dnfdragora/updater.py", line 125, in __get_updates_func
    if self.__backend.Lock():
  File "/usr/lib/python3.6/site-packages/dnfdaemon/client/__init__.py", line 363, in Lock
    self._handle_dbus_error(err)
  File "/usr/lib/python3.6/site-packages/dnfdaemon/client/__init__.py", line 242, in _handle_dbus_error
    raise AccessDeniedError(msg)
dnfdaemon.client.AccessDeniedError: Session is not authorized (36)

Local variables in innermost frame:
msg: 'Session is not authorized (36)'
exc: 'org.baseurl.DnfSystem.AccessDeniedError'
err: DaemonError('g-io-error-quark: GDBus.Error:org.baseurl.DnfSystem.AccessDeniedError: Session is not authorized (36)',)
self: <dnfdaemon.client.Client object at 0x7fc3dd798080>

Potential duplicate: bug 1482210