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Using https://docs.aiohttp.org/en/stable/deployment.html#start-gunicorn gives

[2022-10-27 21:55:00 +0000] [20] [INFO] Worker exiting (pid: 20)
[2022-10-27 21:55:00 +0000] [12] [ERROR] Exception in gunicorn worker
Traceback (most recent call last):
  File "/opt/venv/lib/python3.9/site-packages/aiohttp/worker.py", line 57, in run
    self.loop.run_until_complete(self._task)
  File "uvloop/loop.pyx", line 1517, in uvloop.loop.Loop.run_until_complete
  File "/opt/venv/lib/python3.9/site-packages/aiohttp/worker.py", line 77, in _run
    raise RuntimeError(
RuntimeError: wsgi app should be either Application or async function returning Application, got <opentelemetry.instrumentation.fastapi._InstrumentedFastAPI object at 0x7f3f5b212fa0>

@Srikanth Chekuri should have the most insights on this

A lot of this info is contextual to your application codebase so I won’t be much helpful. You have two options either use gunicorn with worker class which seems to be not so great given other things about your codebase or just use single worker with uvicorn which I think is the best option here.

can we sync , there should be some better solution, if I understand problem properly maybe I can try a custom gunicorn class or something

if I understand problem properly maybe I can try a custom gunicorn class or something

You are the best person to do this because you work with the codebase and know why certain libraries were and how they are conflicting here.

whenever u are free LMK

Before we do this, if you can share me minimal app which has the problem I can probably spend some understanding what is happening and see what can be done about it.