Keto init: Could not decode: json: unknown field "$schema"

[ahuigo]

Accord to steps in https://www.ory.sh/docs/keto/quickstart . I get an error when initializing keto:

$ export KETO_WRITE_REMOTE="127.0.0.1:4467" go run main.go relation-tuple create contrib/cat-videos-example/relation-tuples --insecure-disable-transport-security
Could not decode: json: unknown field "$schema"

$ ./contrib/cat-videos-example/up.sh                                

Could not decode: json: unknown field "$schema"

Is this a bug? How to fix it?

// cmd/relationtuple/create.go
	decoder := json.NewDecoder(bytes.NewReader(fc))
	decoder.DisallowUnknownFields() // unknownFields

// ketoapi/public_api_definitions.go
type RelationTuple struct {
	// the $schema field is missing
}

[ealyn]

I remove the line to pass through

sed -i '2d' contrib/cat-videos-example/relation-tuples/*