linkerd2: [v0.3.1] Seeing intermittent "internal server error" in Dashboard

This is on my test cluster, with almost no traffic. Just leaving a deployment page open in my browser, I see this red banner appear/disappear randomly. All my services are behaving properly though.

I have checked the logs of each container in the controller pod, nothing unusual there.

I’ll be happy to provide more info if you tell me where to look!