Emulated Roku IP not found

I added it via Lovelace and/or configuration.yaml as

emulated_roku:
  servers:
    - name: Emulated Roku
      host_ip: 192.168.1.2
      listen_port: 8060

but http://192.168.1.2:8060/ is unable to connect. What am I doing wrong? UPnP is disabled on my router, but enabling it does not solve the issue. I have restarted HASS after changing the config file. I’m running Home Assistant 2021.10.6 on Docker (can I update to the latest by simply creating a new docker image with the same name, i.e. overwriting the old one?).

Bump. Can anyone help me? The URL still isn’t working.