Grafana: Weird connected lines Graph Panel (Flux)

Issue

In your Grafana Graph panel you have weird connected lines, like the following image even with the Grafana Display setting "Null value = null":

Cause

This is because of the Flux-function aggregateWindow() and the option createEmpty: false

Solution

• In the Flux-function aggregateWindow() remove createEmpty: false or change this to createEmpty: true (because this is the default value).