I created a cluster on the Google cloud platform. I got below error while executing the helm command. What is wrong here?

curl -L https://git.io/getLatestIstio | ISTIO_VERSION=1.2.2 sh -


helm template istio install/kubernetes/helm/istio 
--set global.mtls.enabled=false --set racing.enabled=true 
--set kiali.enabled=true --set grafana.enabled=true 
--namespace istio-system > istio.yaml

Error: template: istio/charts/gateways/templates/rolebindings.yaml:4:7: executing "istio/charts/gateways/templates/rolebindings.yaml" at <($spec.sds) and (eq $spec.sds.enabled true)>: can't give argument to non-function $spec.sds

Use --debug flag to render out invalid YAML