http_process_state_parse_header - Invalid state transition to ST_HTTP_SINK_DATA

Good morning!

I am receiving this error message in our F5 logs and I'm not sure what to make of it. Can anyone provide any pointers on troubleshooting this or providing any insight into what this error might mean? We saw this on 11.4.1 HF3 and still see it on 11.5.1 HF7. We use LTM+APM.

The error includes the VIP, the HTTP profile, the pool name, and the client IP. These are not helpful things when I don't know what I'm looking for.

Thanks! Josh