Upgrade to 2021.10 - InvalidTrustedProxies

After upgrading from 2021.9.7 to 2021.10 I’m unable to connect to the remote UI from Nabu Casa.

When trying to connect from my Nabu Casa account I get this:

2021-10-07 08:05:57 ERROR (MainThread) [hass_nabucasa.iot] Error handling message
Traceback (most recent call last):
  File "/usr/local/lib/python3.9/site-packages/hass_nabucasa/iot.py", line 104, in _async_handle_handler_message
    result = await handler(self.cloud, message["payload"])
  File "/usr/local/lib/python3.9/site-packages/hass_nabucasa/iot.py", line 175, in async_handle_remote_sni
    await cloud.client.async_cloud_connect_update(True)
  File "/usr/src/homeassistant/homeassistant/components/cloud/client.py", line 177, in async_cloud_connect_update
    await self._prefs.async_update(remote_enabled=connect)
  File "/usr/src/homeassistant/homeassistant/components/cloud/prefs.py", line 121, in async_update
    raise InvalidTrustedProxies

The relevant (I believe) part of my configuration looks like this:

  ssl_certificate: /config/fullchain.pem
  ssl_key: /config/privkey.pem
  ip_ban_enabled: true
  login_attempts_threshold: 5
  use_x_forwarded_for: true

Downgraded to latest backup (2021.9.7) and it works fine again.

The error is because you have “” in your proxies.
I don’t see a relevant change in 2021.10, so not sure why it worked in 2021.9…

Thanks! Removed and it works fine with 2021.10.