Steps to reproduce:

Hello,

I tried to use the official template "Template DB PostgreSQL by Zabbix agent 2" but one metric is not known :
Unknown metric pgsql.queries
And all dependent items have no data obviously.
 
I tested it on Centos 8 and Ubuntu 20 and I got the same error with or without parameters.

On CentOS :

1. zabbix_agent2 -version
   zabbix_agent2 (Zabbix) 5.4.11
2. zabbix_agent2 -t pgsql.queries[]
   pgsql.queries[]                               [m|ZBX_NOTSUPPORTED] [Unknown metric pgsql.queries]

On Ubuntu :
~> zabbix_agent2 -version
zabbix_agent2 (Zabbix) 6.0.2
~> zabbix_agent2 -t pgsql.queries[]
pgsql.queries[]                               [m|ZBX_NOTSUPPORTED] [Unknown metric pgsql.queries]