If you're not a developer, your guess about what broke is probably wrong — and a wrong guess sends the agent digging in the wrong file. You don't need to know the cause. You need to describe what you saw precisely.
Three things: what you did, what you expected, what actually happened. That's enough for the agent to find it.
Prompt
After I click 'Save' on the settings page, I expected the toggle to stay on. Instead the page goes blank and I have to refresh. This started after the last change to the settings form. I don't know what's causing it — find out before changing anything.