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Following the tutorial here: https://www.envoyproxy.io/learn/ssl

I've got this error:

front-envoy_1  | [2020-01-12 07:54:22.719][6][critical][main] [source/server/server.cc:94] error initializing configuration '/etc/front-envoy.yaml': Protobuf message (type envoy.config.bootstrap.v3alpha.Bootstrap reason INVALID_ARGUMENT:(static_resources.listeners[0].filter_chains[1]) tls_context: Cannot find field.) has unknown fields
front-envoy_1  | [2020-01-12 07:54:22.719][6][info][main] [source/server/server.cc:595] exiting
front-envoy_1  | Protobuf message (type envoy.config.bootstrap.v3alpha.Bootstrap reason INVALID_ARGUMENT:(static_resources.listeners[0].filter_chains[1]) tls_context: Cannot find field.) has unknown fields

With this settings on the envoy front-end:

    - tls_context:
      common_tls_context:
        tls_certificates:
          - certificate_chain:
              filename: "/etc/listener.crt"
            private_key:
              filename: "/etc/listener.key"