Can't start taskmanager in Minikube

[zpp]

I followed the Doc( 
https://ci.apache.org/projects/flink/flink-docs-release-1.6/ops/deployment/kubernetes.html#session-cluster-resource-definitions)
 to run flink on kubernetes,
but there is an exception(java.net.UnknownHostException: flink-jobmanager: 
Temporary failure in name resolution).
I use a newly installed Minikube on Windows.How can I solve this problem? 
Thanks a lot.