started to fail (ZBX_TCP_WRITE() failed: [32] Broken pipe)

[Giles]

I was trying to monitor my PostgreSQL Database from Zabbix with pg_monz. I have done all the configuration but no data is showing on graph and there is an error message in zabbix_agentd.log as following:
active check configuration update from [192.168.10.54:10050] started to fail (ZBX_TCP_WRITE() failed: [32] Broken pipe)

I have attached the log file here.