Update error "failed to return clean data"

Whenever I try to update Whonix via the qubes updater, I get an error (below). I’ve been getting this error since I installed qubes about a week ago, and I haven’t had a problem on any other qube so I assume it’s a Whonix issue. Running “sudo apt-get update” then “sudo apt-get upgrade” works fine in a standalone VM based on whonix, but it also gives the same error using the qubes updater gui tool.

I’m using whonix workstation 16.

Here’s the error copied from the updater tool:
Updating whonix-ws-16

Error on updating whonix-ws-16: Command '['sudo', 'qubesctl', '--skip-dom0', '--targets=whonix-ws-16', '--show-output', 'state.sls', 'update.qubes-vm']' returned non-zero exit status 20
whonix-ws-16:
      ----------
      _error:
          Failed to return clean data
      retcode:
          1
      stderr:
          Traceback (most recent call last):
            File "/var/tmp/.root_dd8a91_salt/salt-call", line 27, in <module>
              salt_call()
            File "/var/tmp/.root_dd8a91_salt/pyall/salt/scripts.py", line 445, in salt_call
              client.run()
            File "/var/tmp/.root_dd8a91_salt/pyall/salt/cli/call.py", line 48, in run
              caller = salt.cli.caller.Caller.factory(self.config)
            File "/var/tmp/.root_dd8a91_salt/pyall/salt/cli/caller.py", line 64, in factory
              return ZeroMQCaller(opts, **kwargs)
            File "/var/tmp/.root_dd8a91_salt/pyall/salt/cli/caller.py", line 329, in __init__
              super(ZeroMQCaller, self).__init__(opts)
            File "/var/tmp/.root_dd8a91_salt/pyall/salt/cli/caller.py", line 89, in __init__
              self.minion = salt.minion.SMinion(opts)
            File "/var/tmp/.root_dd8a91_salt/pyall/salt/minion.py", line 912, in __init__
              opts["grains"] = salt.loader.grains(opts)
            File "/var/tmp/.root_dd8a91_salt/pyall/salt/loader.py", line 825, in grains
              ret = funcs[key]()
            File "/var/tmp/.root_dd8a91_salt/pyall/salt/grains/core.py", line 2384, in ip_fqdn
              ret["ipv6"] = salt.utils.network.ip_addrs6(include_loopback=True)
            File "/var/tmp/.root_dd8a91_salt/pyall/salt/utils/network.py", line 1353, in ip_addrs6
              return _ip_addrs(interface, include_loopback, interface_data, "inet6")
            File "/var/tmp/.root_dd8a91_salt/pyall/salt/utils/network.py", line 1333, in _ip_addrs
              ret.add(addr)
            File "/usr/lib/python3.9/ipaddress.py", line 1920, in __hash__
              return hash((self._ip, self._scope_id))
          AttributeError: _scope_id
      stdout:

Whonix doesn’t develop salt. That’s part of Qubes.
Therefore could you please report this at Issues · QubesOS/qubes-issues · GitHub?