new dnssec zone OK, error "zone_rekey:dns_zone_getdnsseckeys failed: not found" only in local bind logs ?

[PGNet Dev]

> Which parental-agent to use is up to you. Something you trust.

for the moment, let's say 1.1.1.1

> But if you don't have parental-agents set up, the list of keys to check will be empty. Hence the "not found" result.

i added

	zone "example.com" IN {
		type master; file "/namedb/master/example.com.zone";
		dnssec-policy "pgnd";
		key-directory "/keys/dnssec/example.com";
++		parental-agents { 1.1.1.1; };
		update-policy { grant pgnd-external-rndc-key zonesub txt; };
	};

but, on restart, still see

	dnssec: error: zone example.com/IN/external: zone_rekey:dns_zone_getdnsseckeys failed: not found

something additional needed?