Error communicating through Kafka

[NetBUG]

Hi!
The projects seems cool and I'd like to use it.
The problem is that I cannot make it work as it cannot communicate with Kafka.

The server is running on another machine in a Docker env (bitnami/kafka-2.5.0 image).

The error I get looks

Failed to create topic krpc_sum_server: KafkaError{code=_TIMED_OUT,val=-185,str="Timed out waiting for controller"}

I could not make it work yet ;(

[NetBUG]

Update: the demo worked with 9093 port (with a delay of ~10 sec, which is fine but a bit unexpected), the real code throws ERROR:kafka_rpc.client:failed to handshake with krpc_servicename_server error, looking for it.

[zylo117]

Kafka sometimes crash for unknown reason. I'd clean up all kafka and zookeeper's cache and restart docker. And the first time is really slow, but it gets better afterward.