Unable to get cluster status: Network closed for unknown reason

[Criptos]

I get this error.

[MessageBroker-2] i.z.m.z.status.ZeebeStatusUpdateService : Can't get status from cluster, errors (stacked): Network closed for unknown reason; io.grpc.StatusRuntimeException: UNAVAILABLE: Network closed for unknown reason; UNAVAILABLE: Network closed for unknown reason;

I'm using this broker configuration:

zeebe:
  broker:  
    gateway:
      security:
        enabled: true
        certificateChainPath: /var/bpml/tls/fullchain.pem
        privateKeyPath: /var/bpml/tls/privkey.pem
        authentication:
          mode: none
    exporters:
      hazelcast:
        className: io.zeebe.hazelcast.exporter.HazelcastExporter
        jarPath: lib/zeebe-hazelcast-exporter-1.4.0-jar-with-dependencies.jar

And just using java -jar tu manually run zeebe-simple-monitor-2.7.2.jar

Any ideas are welcome...