ClusterValidationError.Name while trying to apply envoyfilter

Config
1

I’ have a gateway (my-egressgateway) connecting to an external service. I want this gateway to do circuit breaking based on failure rate, supported by envoy but not directly exposed by istio.

I have this filter:

apiVersion: networking.istio.io/v1alpha3
kind: EnvoyFilter
metadata:
  name: outlier-on-percentage 
  namespace: istio-system
spec:
  configPatches:
  - applyTo: CLUSTER
    match:
      context: ANY
      cluster:
        name: "outbound|443||externalservice.com"
    patch:
      operation: ADD
      value:
        outlier_detection:
          max_ejection_percent: 100
          base_ejection_time: 2m
          interval: 30s

          split_external_local_origin_errors: false

          enforcing_failure_percentage: 100
          enforcing_failure_percentage_local_origin: 100

          failure_percentage_request_volume: 50
          failure_percentage_minimum_hosts: 1
          failure_percentage_threshold: 3

          consecutive_5xx: 1
          consecutive_local_origin_failure: 1
          consecutive_gateway_failure: 1
          enforcing_consecutive_gateway_failure: 100
  workloadSelector:
    labels:
      app: my-egressgateway

But when applying it and restarting the egress pods, they never get healthy because of this error:

successful, 1 rejected; lds updates: 1 successful, 0 rejected
2023-11-23T15:54:25.187564Z warning envoy config external/envoy/source/common/config/grpc_subscription_impl.cc:128 gRPC config for type.googleapis.com/envoy.config.cluster.v3.Cluster rejected: Proto constraint validation failed (ClusterValidationError.Name: value length must be at least 1 characters): outlier_detection {

but name is not empty.

Any clue?