'YDocWebSocketHandler' object has no attribute 'room'

[martinRenou]

I'm getting the following error with jupyter-collaboration 2.1.1:

    Traceback (most recent call last):
      File "/home/martin/micromamba/envs/jupytercad/lib/python3.12/site-packages/tornado/ioloop.py", line 750, in _run_callback
        ret = callback()
              ^^^^^^^^^^
      File "/home/martin/micromamba/envs/jupytercad/lib/python3.12/site-packages/tornado/websocket.py", line 640, in <lambda>
        self.stream.io_loop.add_future(result, lambda f: f.result())
                                                         ^^^^^^^^^^
      File "/home/martin/micromamba/envs/jupytercad/lib/python3.12/site-packages/jupyter_collaboration/handlers.py", line 286, in on_message
        changes = self.room.awareness.get_changes(message[1:])
                  ^^^^^^^^^
    AttributeError: 'YDocWebSocketHandler' object has no attribute 'room'

[davidbrochart]

Could you try updating to jupyter-collaboration v3.0.0.a2?

[martinRenou]

When using jupyter-collaboration 3.0.0a2 I'm getting a front-end error when trying to open a file