Getting unexpected HTTP 503 from https://api.snapcraft.io

What does it mean when we see this error message:

stateengine.go:149: state ensure error: cannot decode new commands catalog: got unexpected HTTP status code 503 via GET to “https://api.snapcraft.io/api/v1/snaps/names?confinement=strict%2Cclassic

HTTP error 503 is ‘Service Unavaialbe’ meaning that most likely the store team was doing some work (updates/maintenance) of a service that handles given URL endpoint.