Looking for logging into the Grafana Screen Empty site and are not getting the correct working link for it? In such a case, you can use the links given here by searching your desired login page in the search box. If the page is present on our website then you will get all the links related to the Grafana Screen Empty site. After that you can login as usual with your login credentials.
https://community.grafana.com/t/installation-blank-screen-at-login/829
http://docs.grafana.org/troubleshooting/
https://github.com/grafana/grafana/issues/734
https://github.com/grafana/grafana/issues/969
https://bugs.debian.org/843263