testing tool subscription cause error

[kevinli-stageprecision]

Running the latest version of the testing tool locally on a Windows machine.

Trying to subscribe to the resources, but the script throws an error:

[2025-04-13 19:54:11,378] ERROR in app: Exception on /x-nmos/query/v1.3/subscriptions [POST]
Traceback (most recent call last):
  File "D:\3rdparty\nmos\nmos-testing-master\.nmostest\Lib\site-packages\flask\app.py", line 1511, in wsgi_app
    response = self.full_dispatch_request()
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "D:\3rdparty\nmos\nmos-testing-master\.nmostest\Lib\site-packages\flask\app.py", line 919, in full_dispatch_request
    rv = self.handle_user_exception(e)
         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "D:\3rdparty\nmos\nmos-testing-master\.nmostest\Lib\site-packages\flask_cors\extension.py", line 176, in wrapped_function
    return cors_after_request(app.make_response(f(*args, **kwargs)))
                                                ^^^^^^^^^^^^^^^^^^
  File "D:\3rdparty\nmos\nmos-testing-master\.nmostest\Lib\site-packages\flask\app.py", line 917, in full_dispatch_request
    rv = self.dispatch_request()
         ^^^^^^^^^^^^^^^^^^^^^^^
  File "D:\3rdparty\nmos\nmos-testing-master\.nmostest\Lib\site-packages\flask\app.py", line 902, in dispatch_request
    return self.ensure_sync(self.view_functions[rule.endpoint])(**view_args)  # type: ignore[no-any-return]
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "D:\3rdparty\nmos\nmos-testing-master\nmostesting\mocks\Registry.py", line 673, in post_subscription
    subscription, created = registry.subscribe_to_query_api(version, subscription_request, secure)
                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "D:\3rdparty\nmos\nmos-testing-master\nmostesting\mocks\Registry.py", line 224, in subscribe_to_query_api
    websocket_server = SubscriptionWebsocketWorker('0.0.0.0', websocket_port, resource_type, secure)
                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "D:\3rdparty\nmos\nmos-testing-master\nmostesting\TestHelper.py", line 514, in __init__
    self._ws_server = self._loop.run_until_complete(websockets.serve(self.handler, host, port, ssl=ctx))
                                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "D:\3rdparty\nmos\nmos-testing-master\.nmostest\Lib\site-packages\websockets\asyncio\server.py", line 743, in __init__
    self.server = Server(
                  ^^^^^^^
  File "D:\3rdparty\nmos\nmos-testing-master\.nmostest\Lib\site-packages\websockets\asyncio\server.py", line 284, in __init__
    self.loop = asyncio.get_running_loop()
                ^^^^^^^^^^^^^^^^^^^^^^^^^^

[jonathan-r-thorpe]

Hi,

Is that the complete error traceback? I would expect to see the actual error at the end, whereas this traceback is only indicating the location.

Also it's worth knowing which versions of Python, Windows etc.