"Client has been deleted but is still being used"

[v479038280]

I'm running on Ubuntu 22.04.4 LTS (GNU/Linux 5.15.153.1-microsoft-standard-WSL2 x86_64)

fisl-ubuntu@E14:~/rosys_/field_friend-main$ sudo /bin/python3 /home/fisl-ubuntu/rosys_/field_friend-main/main.py
[sudo] password for fisl-ubuntu: 
NiceGUI ready to go on http://localhost, and http://172.26.101.130
2024-06-25 13:52:15.741 [INFO] field_friend/automations/plant_locator.py:60: self.autoupload: Autoupload.DISABLED
2024-06-25 13:52:15.823 [INFO] field_friend/navigation/gnss.py:104: GNSS reference set to GeoPoint(51.98316, 7.43421)
gio: http://127.0.0.1:80/: Operation not supported
2024-06-25 13:52:16.945 [INFO] field_friend/vision/simulated_cam_provider.py:23: backing up camera: {'id': 'bottom_cam', 'width': 800, 'height': 600, 'color': '#982499', 'fps': 5}
2024-06-25 13:52:17.559 [INFO] field_friend/vision/camera_configurator.py:27: updating camera config
2024-06-25 13:52:17.668 [INFO] field_friend/vision/camera_configurator.py:36: camera: bottom_cam is active
2024-06-25 13:52:17.670 [INFO] field_friend/vision/camera_configurator.py:100: Updated camera bottom_cam parameters, requesting backup...
2024-06-25 13:52:17.908 [INFO] field_friend/vision/simulated_cam_provider.py:23: backing up camera: {'id': 'bottom_cam', 'width': 1280, 'height': 720, 'color': '#982499', 'fps': 5}
2024-06-25 13:52:30.183 [INFO] field_friend/automations/plant_locator.py:44: backup: autoupload: Autoupload.DISABLED
2024-06-25 13:52:30.227 [WARNING] nicegui/context.py:26: context.get_client() is deprecated, use context.client instead
2024-06-25 13:52:30.227 [WARNING] nicegui/context.py:26: context.get_client() is deprecated, use context.client instead
2024-06-25 13:52:30.228 [WARNING] nicegui/context.py:26: context.get_client() is deprecated, use context.client instead
2024-06-25 13:52:30.228 [WARNING] nicegui/context.py:26: context.get_client() is deprecated, use context.client instead
2024-06-25 13:52:30.228 [WARNING] nicegui/context.py:26: context.get_client() is deprecated, use context.client instead
2024-06-25 13:52:35.453 [INFO] field_friend/automations/plant_locator.py:44: backup: autoupload: Autoupload.DISABLED
2024-06-25 13:52:45.675 [WARNING] nicegui/client.py:330: Client has been deleted but is still being used. This is most likely a bug in your application code. See https://github.com/zauberzeug/nicegui/issues/3028 for more information.
Stack (most recent call last):
  File "<string>", line 1, in <module>
  File "/usr/lib/python3.11/multiprocessing/spawn.py", line 122, in spawn_main
    exitcode = _main(fd, parent_sentinel)
  File "/usr/lib/python3.11/multiprocessing/spawn.py", line 135, in _main
    return self._bootstrap(parent_sentinel)
  File "/usr/lib/python3.11/multiprocessing/process.py", line 314, in _bootstrap
    self.run()
  File "/usr/lib/python3.11/multiprocessing/process.py", line 108, in run
    self._target(*self._args, **self._kwargs)
  File "/usr/local/lib/python3.11/dist-packages/uvicorn/_subprocess.py", line 78, in subprocess_started
    target(sockets=sockets)
  File "/usr/local/lib/python3.11/dist-packages/nicegui/server.py", line 36, in run
    super().run(sockets=sockets)
  File "/usr/local/lib/python3.11/dist-packages/uvicorn/server.py", line 62, in run
    return asyncio.run(self.serve(sockets=sockets))
  File "/usr/lib/python3.11/asyncio/runners.py", line 190, in run
    return runner.run(main)
  File "/usr/lib/python3.11/asyncio/runners.py", line 118, in run
    return self._loop.run_until_complete(task)
  File "/usr/local/lib/python3.11/dist-packages/nicegui/awaitable_response.py", line 29, in _fire
    self.fire_and_forget()
  File "/usr/local/lib/python3.11/dist-packages/nicegui/client.py", line 214, in send_and_forget
    self.outbox.enqueue_message('run_javascript', {'code': code}, target_id)
  File "/usr/local/lib/python3.11/dist-packages/nicegui/outbox.py", line 51, in enqueue_message
    self.client.check_existence()
  File "/usr/local/lib/python3.11/dist-packages/nicegui/client.py", line 330, in check_existence
    log.warning('Client has been deleted but is still being used. This is most likely a bug in your application code. '

[falkoschindler]

Thanks for reporting this problem, @v479038280!
I created issue #89.

[pascalzauberzeug]

@v479038280 the issue has been fixed in PR #92