Steps to reproduce:

1. Open history.php for latest data
2. Change itme range  to show Last 2 days, it is normal
3. Change itme range  to show Last 7 days, it show no data

Result:
See screenshot-1hour  and screenshot-2days, it is normal to show history data.

See screenshot-7days, it show no data after I change to Last 7 days, it is same for all of other items.
Expected:
Show data for that item exist in database.