the download of a dashboard fails occasionally because of invalid content length.
curl -v https://grafana.com/api/dashboards/3050/revisions/1/download
< Content-Length: 17440
which skips the last two bytes including final curly braces, which leaves the download unusable. Hence, my dashboard cannot be deployed to my Kubernetes cluster (see: https://github.com/kubernetes/charts/blob/master/stable/grafana/templates/configmap.yaml#L51), and so Grafana logs an entry each second about this.
I did not find a workaround for the content length.
wget also fails.
Thanks for your ideas and comments!