Active agent availability item status unknown

[rimvydukas]

Hi,
Installed Zabbix Agent 2 on my first arm server today. Configured it as active agent. And problem is that "Active agent availability" item is showing unknown status. Anyone have a clue how to fix this?

[dimir]

https://www.zabbix.com/documentation/current/en/manual/web_interface/frontend_sections/data_collection/hosts#reading-host-availability