no data is displayed on trends if you select a display period of 5 days or more

[ayfaar]

I have Zabbix 4.2.8 with PostgreSQL 10.10.
I have template for some deviсes monitoring over SNMP.
when I want to view data on simple graf for a period of 5 days or more , nothing is displayed on the graf(no data), although the data exists and I can view it if the period is less than 5 days. History stoarge period 30 days, trends stoarge period 0 days

[batchen_regev]

if you see the data from the past few days individually every day but when you ask for the whole 5 days it shows nothing sounds like a bug. can you try update your zabbix to 4.4 version ?
backup before any changes .

[ayfaar]

I update zabbix to 4.4 version. The proble is same. I can see data on simple graf for a5 day period(or more) only if i use trend stoarge period(i use 60 days)

[dimir]

Could you check web server log if there are some warnings/errors?

[ayfaar]

where is nothing in logs