404
api.versions_not_configuredapiThis surface has no version registry
Returned by the implementation; no specification rule declares it yet.
Version negotiation was attempted on a surface that does not have a registry configured.
Why the API refuses
this surface has no version registry
What to do
Drop the PG-Version header for this surface. If you see this on the partner surface in a deployed environment, report it — the partner surface is versioned and this is a configuration fault.