EnvoyProxy Rate Limit Not Working in Istio 1.7.3

getting error -

warning envoy config gRPC config for type.googleapis.com/envoy.config.listener.v3.Listener rejected: Error adding/updating listener(s) 0.0.0.0_8080: Proto constraint validation failed (RateLimitValidationError.Domain: [“value length must be at least " ‘\x01’ " bytes”]):