Helm repo add rancher-stable failed

Rancher 2.x
1

I try to use helm to install rancher.

But use command
helm repo add rancher-stable https://releases.rancher.com/server-charts/stable,
got error:
Error: Looks like "https://releases.rancher.com/server-charts/stable" is not a valid chart repository or cannot be reached: Failed to fetch https://releases.rancher.com/server-charts/stable/index.yaml : 403 Forbidden

But test url used command
curl https://releases.rancher.com/server-charts/stable/index.yaml,
it was worked.

How can I solved it?

2

I change another network environment, It was worked!

Maybe our office network blocked by releases.rancher.com .