no known profile for given user ID

[alistair23]

When running mautrix-signal with a dendrite server I am seeing this error, when manually running the sync command.

I also am not getting messages, I'm assuming it's related to this error as well

[2022-07-15 06:59:06,516] [[email protected].=] Profile of puppet with Address(number=Non
[2022-07-15 06:59:06,519] [[email protected]] req #38: POST https:///_matrix/client/v3/rooms/#### time="2022-07-15T06:59:06.523028156Z" level=error msg="buildMembershipEvent failed" error="no known profile for given user ID" req.id=dZ8Aw4l
[2022-07-15 06:59:06,526] [[email protected]] 172.18.0.1 [15/Jul/2022:06:59:06 +0000] "GET /users/@signal
[2022-07-15 06:59:06,527] [[email protected]] req #38 (/v3/rooms//invite) completed in 7.6ms 
[2022-07-15 06:59:06,529] [[email protected].=] Failed to update portal
Traceback (most recent call last):
  File "/usr/lib/python3.10/site-packages/mautrix/appservice/api/intent.py", line 242, in invite_user
    await super().invite_user(
  File "/usr/lib/python3.10/site-packages/mautrix/client/store_updater.py", line 98, in invite_user
    await super().invite_user(room_id, user_id, reason, extra_content=extra_content)
  File "/usr/lib/python3.10/site-packages/mautrix/client/api/rooms.py", line 434, in invite_user
    await self.api.request(Method.POST, Path.v3.rooms[room_id].invite, content=data)
  File "/usr/lib/python3.10/site-packages/mautrix/api.py", line 399, in request
    resp_data, resp = await self._send(
  File "/usr/lib/python3.10/site-packages/mautrix/api.py", line 255, in _send
    raise make_request_error(
mautrix.errors.request.MUnknown: Internal Server Error
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
  File "/usr/lib/python3.10/site-packages/mautrix_signal/portal.py", line 1824, in update_matrix_room
    await self._update_matrix_room(source, info)
  File "/usr/lib/python3.10/site-packages/mautrix_signal/portal.py", line 1883, in _update_matrix_room
    await self.update_info(source, info)
  File "/usr/lib/python3.10/site-packages/mautrix_signal/portal.py", line 1558, in update_info
    await self._update_participants(source, info, sender)
  File "/usr/lib/python3.10/site-packages/mautrix_signal/portal.py", line 1737, in _update_participants
    await self._try_with_puppet(
  File "/usr/lib/python3.10/site-packages/mautrix_signal/portal.py", line 1663, in _try_with_puppet
    await action(self.main_intent)
  File "/usr/lib/python3.10/site-packages/mautrix/appservice/api/intent.py", line 140, in wrapper
    return await __method(*args, **kwargs)
  File "/usr/lib/python3.10/site-packages/mautrix/appservice/api/intent.py", line 250, in invite_user
    raise IntentError(f"Failed to invite {user_id} to {room_id}", e)
mautrix.errors.base.IntentError: ('Failed to invite @signal_ to !###