HTTP 4xx errors are treated as errors

[d33kayyy]

Hi, I recently upgraded my Python application from Python 3.10 to 3.12, hence I had to upgrade ddtrace from 1.20.19 to 2.16.1.

I noticed that now responses with HTTP 4xx are also considered as errors. I checked the documentation and found DD_TRACE_HTTP_SERVER_ERROR_STATUSES. However, I'm not setting it in my project that it should use the default, which must be status between 500-599.

Libraries' versions

django==5.1.3
ddtrace==2.16.1
gunicorn==20.1.0
uvicorn==0.32.0

Running with

ddtrace-run gunicorn -w $HTTP_WORKER_COUNT -k example.asgi.UvicornWorker --bind 0.0.0.0:$PORT example.asgi:application