Install mesh to GKE cluster with lnkerd

Hi,

When I try install traefik mesh I got error:

helm install --namespace=traefik-mesh traefik-mesh traefik-mesh/traefik-mesh

To learn more, consult https://cloud.google.com/blog/products/containers-kubernetes/kubectl-auth-changes-in-gke

Error: INSTALLATION FAILED: rendered manifests contain a resource that already exists. Unable to continue with install: ClusterRole "prometheus" in namespace "" exists and cannot be imported into the current release: invalid ownership metadata; label validation error: missing key "app.kubernetes.io/managed-by": must be set to "Helm"; annotation validation error: missing key "meta.helm.sh/release-name": must be set to "traefik-mesh"; annotation validation error: missing key "meta.helm.sh/release-namespace": must be set to "traefik-mesh"

How I can fixed that?