Comment 20 for bug 2002902

It should also return 200 but 500, even if you have no data between these two timestamps.
So that there must be something wrong with skyline service. Have you found any error log in log file? in the dictionary of /var/log/skyline.

you can checking log while refreshing your page in skyline. let us knonw if you found any error log or useful info.

And the query range is would be set as last 1 hour defaultly, you can change it in the skyline monitor center page.