You can download server logs to make the problem detection simpler. Please include this file if you are submitting a bug report.
Need to be added on "PMM Settings -> Diagnostic" page before Button to download the logs
2) Additionally, let's change the text on "Insights-> Prometheus -> PMM Server Logs" to :
Please go to [PMM Settings page|/graph/d/pmm-settings/pmm-settings] to get Diagnostic data