Hey @User, any specific reason using gunicorn with an asgi based FastAPI application? Also, which version of supertokens-python are you using? For supertokens-python, version 0.3.0, you can set the parameter

telemetry=False

in init config and check if you are still getting the above error. If you are still encountering the same error, the library will need to be updated for the scenario where Fastapi is used along with an wsgi server. Currently we only support that for django