This message is shown when the data.units
specified for the data sources does not contain any unit that can be used to aggregate data for the requested unit.
For example, for 1 d
it would accept data units such as 1 d
, 6 h
, 1 h
, 30 m
but will not use units like 10 h
or 1 w
.
However since you are only seeing the issue after interacting with the chart, it could be a different cause. For example, when the chart issues a request for the unit 1 h
but the data source returns data in 1 m
units, the chart marks the 1 h
unit as non-existant and will no longer request it to the server.
The problem though in this second case is that there should have been some other error in the log as well that would hint towards this.