Discovery rules via proxy not working

[Grax88]

I have small (100 devices) zabbix installation with about 3 proxies. There is problem with one of them that snmp dicovery rules not working. It's rules for SNMP discovery but SNMP with devices works normal. For example I am able to read via SNMP partnumber for device (Dell DRAC card) but discovery rules not working (drives, temperatures, ...) It writes "cannot find the data array in the received json object". Same result with other snmp check (switches etc.). Any idea?

[Grax88]

Problem was with different versions of server (4.0.3) and proxy (4.2)