Kafka-log4j-appender 3.3.x hangs on Kafka 3.3.1 instance

I am using kafka-log4j-appender 3.3.x against a Kafka 3.3.1 instance and it hangs whenever i use the logger.

This is the configuration I am using

<?xml version="1.0" encoding="UTF-8"?> eventcluster-kafka-bootstrap:9092 paymentevent ${bootstrap.servers}

Am I missing something?

I am using the following in maven to get the package


My topic is created using strimzi

apiVersion: kafka.strimzi.io/v1beta2
kind: KafkaTopic
name: paymentevent
namespace: kafka
strimzi.io/cluster: eventcluster
partitions: 1
replicas: 1

However it works perfectly if I use 3.2.3 of the appender.

Any ideas?