I have encountered the same issue but I didn’t find a solution. Which browser and version do you use ?
My post here : Update grafana 4.6.5 to grafana 6.0.0 - problem
I have encountered the same issue but I didn’t find a solution. Which browser and version do you use ?
My post here : Update grafana 4.6.5 to grafana 6.0.0 - problem