Steps to reproduce:

1. Add Postgres Session with TLSConnect=required and without spezific Database to Zabbix Agent
2. Change already excisting Postgresql Agent2 Template to Sessions instead of Single Parameters.
   example:
   pgsql.ping["\{$PG.URI}","\{$PG.USER}","\{$PG.PASSWORD}"] -> pgsql.ping[\{$PG.SESSION}]
3. Check discovered DBs

Result:

Getting Error that "Invalid parameters: fourth parameter "Database" cannot be passed along with session." (when pgsql.db.bloating_tables[\{$PG.SESSION},,,"postgres"])

Expected:
Flexible Database selection with Session or TLS Configuration in the frontend so that LLD works on Databases.