I am seeing N/A in the Gatling Responses per second By Status graph, can someone please explain what does it indicates and how to resolve it

I am seeing N/A in the Gatling Responses per second By Status graph, can someone please explain what does it indicates and how to resolve it

There’s no status code when there was no actual response, typically on IO error or timeout.
Please scroll down a bit to see the errors chart, they are likely to match.