Postman with Pre-request Scripts: "Error: Parse Error: Header overflow"

Question

I was having this problem only when running requests for a local application with some Pre-request Scripts:

Error: Parse Error: Header overflow

The Postman version was: v7.25.0.

PS: For the same request for my server application, I wasn't received any errors.

Answer 1

I'm using a MacOS Catalina 10.15.5 with a rails 6.0.3.1 and puma 4.3.5 on localhost and nginx on the server.

The problem for me was the scout_apm that includes a huge header. I ended up by removing this using SCOUT_DEV_TRACE=false

https://docs.scoutapm.com/#ruby-devtrace