Last() query with line graph and singlestat

Dear All …

I have problem about time stamp.
So I make a simple test.

Created 2 panel, with the same query but different view.
The first is line graph , and theother is singlestat.

Based on attached picture … single stat display a number while at the same time the ‘current’ value of line graph is None.

Note : backend database use InfluxDB

Sincerely
-bino-