"Series is null" problem with zabbix

zabbix

#1

Hello.

I have a problem with graph panel with several “metric” items: When one of items has all “null” values in the selected period of time, graph panel becomes empty with “Series is null” error:

s1

When I extend time range in which all “metric” items has at least one “not-null” value error disappears:

s2

I’ve tried these settings:
Hide series - With only Nulls
Hide series - With only zeros
Null value - Connected
Null value - Null as Zero
Still no luck.

Please help me to resolve this issue.
Thanks.