Received request for api with key 0 (Produce) and unsupported version 0 #221
Description
Hello,
Recently we have upgraded our Kafka into 4.0.0 version and we have started getting below error messages, hence no messages are being written anymore:
org.apache.kafka.common.errors.UnsupportedVersionException: Received request for api with key 0 (Produce) and unsupported version 0
The setup that we have is Citrix Netscaler Observability agent -> kafka-proxy -> Kafka.
I am wondering, if this produce API version is being used by Netscaler agent or kafka-proxy? As in KIP-896 old protocol versions have been removed from a support.