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无法在 18.04 上打开软件属性-gtk

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无法在 18.04 上打开软件属性-gtk

当我在终端上输入software-properties-gtk（sudo -H无论是否输入）时，出现以下错误：

Traceback (most recent call last):
  File "/usr/bin/software-properties-gtk", line 100, in <module>
    app = SoftwarePropertiesGtk(datadir=options.data_dir, options=options, file=file)
  File "/usr/lib/python3/dist-packages/softwareproperties/gtk/SoftwarePropertiesGtk.py", line 172, in __init__
    self.backend.Reload();
  File "/usr/lib/python3/dist-packages/dbus/proxies.py", line 70, in __call__
    return self._proxy_method(*args, **keywords)
  File "/usr/lib/python3/dist-packages/dbus/proxies.py", line 145, in __call__
    **keywords)
  File "/usr/lib/python3/dist-packages/dbus/connection.py", line 651, in call_blocking
    message, timeout)
dbus.exceptions.DBusException: org.freedesktop.DBus.Error.ServiceUnknown: The name :1.221 was not provided by any .service files

我发现问题可能与idna包有关，因此我尝试重新安装它，但仍然收到此错误。

还有想法吗？

谢谢

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