Failed to create Kafka cluster

[fwmarkcheung]

In which scenario did this bug occur?

Failed to create Kafka cluster in Apache Kafaka Basics (Step 2)

https://learn.openshift.com/middleware/courses/middleware-kafka/kafka-basic

$ oc -n kafka get pods -w
NAME READY STATUS RESTARTS AGE
amq-streams-cluster-operator-v1.8.1-6c5f7497b7-9zwv6 1/1 Running 0 52s
^C$ oc -n kafka apply -f /opt/kafka-cluster.yaml
error: unable to recognize "/opt/kafka-cluster.yaml": no matches for kind "Kafka" in version "kafka.strimzi.io/v1beta1"