Mobile version showing blank groups

I just saw how to access the mobile client logs! Maybe some of this will help.

FYI, the reverse proxy is set up according to Configuring Apache2 as a proxy for Mattermost Server (Unofficial) — Mattermost documentation

I’m seeing a number of instances of these messages in the mobile client log:

2023/04/12 09:21:32.591 WARN  Handling Javascript error fetchSessions false
2023/04/12 09:21:32.615 ERROR fetchSessions {
  "jsEngine": "hermes",
  "intl": {
    "defaultMessage": "Received invalid response from the server.",
    "id": "mobile.request.invalid_response"
  },
  "url": "\/api\/v4\/users\/me\/sessions",
  "message": "Received invalid response from the server."
}
2023/04/12 09:27:36.096 INFO  websocket re-established connection to wss://mattermost.teamseis.com/api/v4/websocket?connection_id=e6414m1khifu3e1sngm8c8xe4c&sequence_number=1
2023/04/12 09:27:36.109 INFO  wss://mattermost.company.com/api/v4/websocket?connection_id=e6414m1khifu3e1sngm8c8xe4c&sequence_number=1 got connection id  1mf9yqeai3rhpbbih8pnw337xa
2023/04/12 09:27:36.111 INFO  wss://mattermost.company.com/api/v4/websocket?connection_id=e6414m1khifu3e1sngm8c8xe4c&sequence_number=1 long timeout, or server restart, or sequence number is not found, or first connect after failure.
2023/04/12 09:27:36.625 INFO  WEBSOCKET RECONNECT MODELS BATCHING TOOK 42ms
2023/04/12 09:27:52.114 INFO  websocket closed wss://mattermost.company.com/api/v4/websocket?connection_id=e6414m1khifu3e1sngm8c8xe4c&sequence_number=1