UPTIME Graph Stopped updating

<%- if @topic_view.topic.tags.present? %>
<%= t 'js.tagging.tags' %>: <%- @topic_view.topic.tags.each do |t| %> <%= t %> <%- end %>
<% end %>

The device rebooted and when it came back up the uptime graph quit reporting, but the other graphs are still working. How do I get the uptime graph working again?