Error when setting up Envoy as a forward proxy. about envoy HOT 8 CLOSED

admin:
  address:
    socket_address:
      address: 127.0.0.1
      port_value: 9903
static_resources:
  clusters:
  - cluster_type:
      name: envoy.clusters.dynamic_forward_proxy
      typed_config:
        '@type': type.googleapis.com/envoy.extensions.clusters.dynamic_forward_proxy.v3.ClusterConfig
        allow_coalesced_connections: true
        dns_cache_config:
          dns_lookup_family: ALL
          name: dynamic_forward_proxy_cache_config
    connect_timeout: 2s
    dns_lookup_family: ALL
    lb_policy: CLUSTER_PROVIDED
    name: dynamic_forward_proxy_cluster
  listeners:
  - additional_addresses:
    - address:
        socket_address:
          address: ::1
          port_value: 9904
    address:
      socket_address:
        address: 127.0.0.1
        port_value: 9904
    filter_chains:
    - filters:
      - name: envoy.filters.network.http_connection_manager
        typed_config:
          '@type': type.googleapis.com/envoy.extensions.filters.network.http_connection_manager.v3.HttpConnectionManager
          codec_type: AUTO
          http2_protocol_options:
            allow_connect: true
          http_filters:
          - name: envoy.filters.http.dynamic_forward_proxy
            typed_config:
              '@type': type.googleapis.com/envoy.extensions.filters.http.dynamic_forward_proxy.v3.FilterConfig
              dns_cache_config:
                dns_lookup_family: ALL
                name: dynamic_forward_proxy_cache_config
          - name: envoy.filters.http.router
            typed_config:
              '@type': type.googleapis.com/envoy.extensions.filters.http.router.v3.Router
          route_config:
            name: local_route
            virtual_hosts:
            - domains:
              - '*'
              name: local_service
              routes:
              - match:
                  prefix: /
                route:
                  cluster: dynamic_forward_proxy_cluster
              - match:
                  connect_matcher: {}
                route:
                  cluster: dynamic_forward_proxy_cluster
                  upgrade_configs:
                  - connect_config: {}
                    upgrade_type: CONNECT
          stat_prefix: dynamic_forward_proxy_upgrade
    name: dynamic_forward_proxy_upgrade
    traffic_direction: OUTBOUND