Istio 1.6.3 - RequestAuthentication don't work with Keycloak

Looking at ingressgateway logs I see these errors:

2020-07-09T09:36:50.669693Z     warn    Envoy proxy is NOT ready: config not received from Pilot (is Pilot running?): cds updates: 7 successful, 0 rejected; lds updates: 0 successful, 7 rejected
2020-07-09T09:36:52.669736Z     warn    Envoy proxy is NOT ready: config not received from Pilot (is Pilot running?): cds updates: 7 successful, 0 rejected; lds updates: 0 successful, 7 rejected
2020-07-09T09:36:54.670022Z     warn    Envoy proxy is NOT ready: config not received from Pilot (is Pilot running?): cds updates: 7 successful, 0 rejected; lds updates: 0 successful, 7 rejected
2020-07-09T09:36:55.068148Z     warning envoy config    [external/envoy/source/common/config/grpc_subscription_impl.cc:101] gRPC config for type.googleapis.com/envoy.api.v2.Listener rejected: Error adding/updating listener(s) 0.0.0.0_8443: Proto constraint validation failed (JwtAuthenticationValidationError.Providers[key]: ["embedded message failed validation"] | caused by JwtProviderValidationError.LocalJwks: ["embedded message failed validation"] | caused by DataSourceValidationError.InlineString: ["value length must be at least " '\x01' " bytes"]): providers {
  key: "origins-0"
  value {
    issuer: "http://192.168.202.21:8000/auth/realms/istio"
    local_jwks {
      inline_string: ""
    }
    payload_in_metadata: "http://192.168.202.21:8000/auth/realms/istio"
  }
}
rules {
  match {
    prefix: "/"
  }
  requires {
    requires_any {
      requirements {
        provider_name: "origins-0"
      }
      requirements {
        allow_missing {
        }
      }
    }
  }
}

0.0.0.0_8080: Proto constraint validation failed (JwtAuthenticationValidationError.Providers[key]: ["embedded message failed validation"] | caused by JwtProviderValidationError.LocalJwks: ["embedded message failed validation"] | caused by DataSourceValidationError.InlineString: ["value length must be at least " '\x01' " bytes"]): providers {
  key: "origins-0"
  value {
    issuer: "http://192.168.202.21:8000/auth/realms/istio"
    local_jwks {
      inline_string: ""
    }
    payload_in_metadata: "http://192.168.202.21:8000/auth/realms/istio"
  }
}
rules {
  match {
    prefix: "/"
  }
  requires {
    requires_any {
      requirements {
        provider_name: "origins-0"
      }
      requirements {
        allow_missing {
        }
      }
    }
  }
}


2020-07-09T09:36:55.706732Z     warning envoy config    [external/envoy/source/common/config/grpc_subscription_impl.cc:101] gRPC config for type.googleapis.com/envoy.api.v2.Listener rejected: Error adding/updating listener(s) 0.0.0.0_8443: Proto constraint validation failed (JwtAuthenticationValidationError.Providers[key]: ["embedded message failed validation"] | caused by JwtProviderValidationError.LocalJwks: ["embedded message failed validation"] | caused by DataSourceValidationError.InlineString: ["value length must be at least " '\x01' " bytes"]): providers {
  key: "origins-0"
  value {
    issuer: "http://192.168.202.21:8000/auth/realms/istio"
    local_jwks {
      inline_string: ""
    }
    payload_in_metadata: "http://192.168.202.21:8000/auth/realms/istio"
  }
}
rules {
  match {
    prefix: "/"
  }
  requires {
    requires_any {
      requirements {
        provider_name: "origins-0"
      }
      requirements {
        allow_missing {
        }
      }
    }
  }
}

0.0.0.0_8080: Proto constraint validation failed (JwtAuthenticationValidationError.Providers[key]: ["embedded message failed validation"] | caused by JwtProviderValidationError.LocalJwks: ["embedded message failed validation"] | caused by DataSourceValidationError.InlineString: ["value length must be at least " '\x01' " bytes"]): providers {
  key: "origins-0"
  value {
    issuer: "http://192.168.202.21:8000/auth/realms/istio"
    local_jwks {
      inline_string: ""
    }
    payload_in_metadata: "http://192.168.202.21:8000/auth/realms/istio"
  }
}
rules {
  match {
    prefix: "/"
  }
  requires {
    requires_any {
      requirements {
        provider_name: "origins-0"
      }
      requirements {
        allow_missing {
        }
      }
    }
  }
}


2020-07-09T09:36:56.669676Z     warn    Envoy proxy is NOT ready: config not received from Pilot (is Pilot running?): cds updates: 9 successful, 0 rejected; lds updates: 0 successful, 9 rejected
2020-07-09T09:36:58.669808Z     warn    Envoy proxy is NOT ready: config not received from Pilot (is Pilot running?): cds updates: 9 successful, 0 rejected; lds updates: 0 successful, 9 rejected
2020-07-09T09:36:59.466385Z     warning envoy config    [external/envoy/source/common/config/grpc_subscription_impl.cc:101] gRPC config for type.googleapis.com/envoy.api.v2.Listener rejected: Error adding/updating listener(s) 0.0.0.0_8443: Proto constraint validation failed (JwtAuthenticationValidationError.Providers[key]: ["embedded message failed validation"] | caused by JwtProviderValidationError.LocalJwks: ["embedded message failed validation"] | caused by DataSourceValidationError.InlineString: ["value length must be at least " '\x01' " bytes"]): providers {
  key: "origins-0"
  value {
    issuer: "http://192.168.202.21:8000/auth/realms/istio"
    local_jwks {
      inline_string: ""
    }
    payload_in_metadata: "http://192.168.202.21:8000/auth/realms/istio"
  }
}
rules {
  match {
    prefix: "/"
  }
  requires {
    requires_any {
      requirements {
        provider_name: "origins-0"
      }
      requirements {
        allow_missing {
        }
      }
    }
  }
}

0.0.0.0_8080: Proto constraint validation failed (JwtAuthenticationValidationError.Providers[key]: ["embedded message failed validation"] | caused by JwtProviderValidationError.LocalJwks: ["embedded message failed validation"] | caused by DataSourceValidationError.InlineString: ["value length must be at least " '\x01' " bytes"]): providers {
  key: "origins-0"
  value {
    issuer: "http://192.168.202.21:8000/auth/realms/istio"
    local_jwks {
      inline_string: ""
    }
    payload_in_metadata: "http://192.168.202.21:8000/auth/realms/istio"
  }
}
rules {
  match {
    prefix: "/"
  }
  requires {
    requires_any {
      requirements {
        provider_name: "origins-0"
      }
      requirements {
        allow_missing {
        }
      }
    }
  }
}


2020-07-09T09:37:00.669911Z     warn    Envoy proxy is NOT ready: config not received from Pilot (is Pilot running?): cds updates: 11 successful, 0 rejected; lds updates: 0 successful, 10 rejected
2020-07-09T09:37:01.818665Z     warning envoy config    [external/envoy/source/common/config/grpc_subscription_impl.cc:101] gRPC config for type.googleapis.com/envoy.api.v2.Listener rejected: Error adding/updating listener(s) 0.0.0.0_8443: Proto constraint validation failed (JwtAuthenticationValidationError.Providers[key]: ["embedded message failed validation"] | caused by JwtProviderValidationError.LocalJwks: ["embedded message failed validation"] | caused by DataSourceValidationError.InlineString: ["value length must be at least " '\x01' " bytes"]): providers {
  key: "origins-0"
  value {
    issuer: "http://192.168.202.21:8000/auth/realms/istio"
    local_jwks {
      inline_string: ""
    }
    payload_in_metadata: "http://192.168.202.21:8000/auth/realms/istio"
  }
}
rules {
  match {
    prefix: "/"
  }
  requires {
    requires_any {
      requirements {
        provider_name: "origins-0"
      }
      requirements {
        allow_missing {
        }
      }
    }
  }
}

0.0.0.0_8080: Proto constraint validation failed (JwtAuthenticationValidationError.Providers[key]: ["embedded message failed validation"] | caused by JwtProviderValidationError.LocalJwks: ["embedded message failed validation"] | caused by DataSourceValidationError.InlineString: ["value length must be at least " '\x01' " bytes"]): providers {
  key: "origins-0"
  value {
    issuer: "http://192.168.202.21:8000/auth/realms/istio"
    local_jwks {
      inline_string: ""
    }
    payload_in_metadata: "http://192.168.202.21:8000/auth/realms/istio"
  }
}
rules {
  match {
    prefix: "/"
  }
  requires {
    requires_any {
      requirements {
        provider_name: "origins-0"
      }
      requirements {
        allow_missing {
        }
      }
    }
  }
}


2020-07-09T09:37:02.669666Z     warn    Envoy proxy is NOT ready: config not received from Pilot (is Pilot running?): cds updates: 11 successful, 0 rejected; lds updates: 0 successful, 11 rejected
2020-07-09T09:37:04.669697Z     warn    Envoy proxy is NOT ready: config not received from Pilot (is Pilot running?): cds updates: 11 successful, 0 rejected; lds updates: 0 successful, 11 rejected
2020-07-09T09:37:06.669999Z     warn    Envoy proxy is NOT ready: config not received from Pilot (is Pilot running?): cds updates: 11 successful, 0 rejected; lds updates: 0 successful, 11 rejected
2020-07-09T09:37:08.669745Z     warn    Envoy proxy is NOT ready: config not received from Pilot (is Pilot running?): cds updates: 11 successful, 0 rejected; lds updates: 0 successful, 11 rejected
2020-07-09T09:37:10.675882Z     warn    Envoy proxy is NOT ready: config not received from Pilot (is Pilot running?): cds updates: 11 successful, 0 rejected; lds updates: 0 successful, 11 rejected

What is going wrong?