Ray head node on kubernetes fails to start

My Ray cluster fails to start up after installing the helm chart from kuberay.

kubectl logs raycluster-kuberay-head-qttzw shows the following:

/bin/bash: line 1: 9 Illegal instruction (core dumped) ray start --head --dashboard-host=0.0.0.0 --metrics-export-port=8080 --block --num-cpus=1 --memory=2000000000

What should I do to run Ray on k8s successfully?