SDN + PowerDNS Error [api response is not a json]

Proxmox VE 7.2-7
PowerDNS Authoritative Server 4.5.4

create sdn dns object failed: dns api error: api response is not a json at /usr/share/perl5/PVE/Network/SDN.pm line 278. (500)

Does anyone with the same error? Am I missing something?

ID: pdns01
URL: http://10.10.0.90:8081
API KEY: ******
TTL: 300