Error 500 when mentioning a user in element

[SergioMartinSanchez]

Hi!, we have a home server in the company in which our employees log in via SSO and connect using the googlechat bridge, the problem we have is that when an employee connected with the bridge tries to mention to another user using the bridge the bridge gives us 500

{
  "type": "m.room.message",
  "sender": "@googlechatbot:test.etke.host",
  "content": {
    "msgtype": "m.notice",
    "body": "⚠ Your message may not have been bridged: Request return unexpected status: 500: Internal Server Error"
  },
  "origin_server_ts": 1671533188712,
  "unsigned": {
    "age": 141
  },
  "event_id": "$6gXv0AJnVpvDp4MeXqUuz7eh39ERxxL6kQwlFIubFAE",
  "room_id": "!tmCHJGObAFCVrWIdcQ:test.etke.host"
}