install polyaxon by using helm (offline) error

[TbearFC]

Hello! I am interesting in the polyaxon and want to run demo by installing in minikube. But I met the problem at the very beginning.
Trying install polyaxon in minikube.

• start minikube
  minikube start --cpus 4 --memory 8192 --disk-size=40g --driver=hyperkit

• download the polyaxon-charts and generate polyaxon-1.0.8.tgz

• using helm install polyaxon-1.0.8.tgz offline
  helm install polyaxon-1.0.8.tgz

but it goes....

Error: render error in "polyaxon/templates/streams-deployment.yaml": template: polyaxon/templates/streams-deployment.yaml:63:3: executing "polyaxon/templates/streams-deployment.yaml" at <include "config.artifactsStore.mount" .>: error calling include: template: polyaxon/templates/partials/_stores.tpl:16:39: executing "config.artifactsStore.mount" at <eq .Values.artifactsStore.kind "host_path">: error calling eq: invalid type for comparison

I got the problem just like that.So is anyone else has same problem just like me?

version information:

• my os is macos 10.15.3.
• minikube version is v1.9.2
• helm version is

Client: &version.Version{SemVer:"v2.16.6", GitCommit:"dd2e5695da88625b190e6b22e9542550ab503a47", GitTreeState:"clean"}
Server: &version.Version{SemVer:"v2.16.6", GitCommit:"dd2e5695da88625b190e6b22e9542550ab503a47", GitTreeState:"clean"}

• polyaxon charts version is the newest by now.

THX! BEST WISHES~