no matches for kind "APIService" in version "apiregistration.k8s.io/v1"

[reaperhero]

kubectl apply -f https://kuboard.cn/install-script/kuboard.yaml kubectl apply -f https://addons.kuboard.cn/metrics-server/0.3.7/metrics-server.yaml

deployment.apps/kuboard created
service/kuboard created
serviceaccount/kuboard-user created
clusterrolebinding.rbac.authorization.k8s.io/kuboard-user created
serviceaccount/kuboard-viewer created
clusterrolebinding.rbac.authorization.k8s.io/kuboard-viewer created
Warning: kubectl apply should be used on resource created by either kubectl create --save-config or kubectl apply
clusterrole.rbac.authorization.k8s.io/system:aggregated-metrics-reader configured
Warning: kubectl apply should be used on resource created by either kubectl create --save-config or kubectl apply
clusterrolebinding.rbac.authorization.k8s.io/metrics-server:system:auth-delegator configured
Warning: kubectl apply should be used on resource created by either kubectl create --save-config or kubectl apply
rolebinding.rbac.authorization.k8s.io/metrics-server-auth-reader configured
Warning: kubectl apply should be used on resource created by either kubectl create --save-config or kubectl apply
clusterrole.rbac.authorization.k8s.io/system:metrics-server configured
Warning: kubectl apply should be used on resource created by either kubectl create --save-config or kubectl apply
clusterrolebinding.rbac.authorization.k8s.io/system:metrics-server configured
Warning: kubectl apply should be used on resource created by either kubectl create --save-config or kubectl apply
serviceaccount/metrics-server configured
Warning: kubectl apply should be used on resource created by either kubectl create --save-config or kubectl apply
deployment.apps/metrics-server configured
Warning: kubectl apply should be used on resource created by either kubectl create --save-config or kubectl apply
service/metrics-server configured
error: unable to recognize "https://addons.kuboard.cn/metrics-server/0.3.7/metrics-server.yaml": no matches for kind "APIService" in version "apiregistration.k8s.io/v1"

[reaperhero]

oh,my cluster verison is 1.9..sorry

[reaperhero]

where is source code kuboard ?