app/helpers/dot_helper.rb

@@ -8,9 +8,15 @@ module DotHelper

                         } rescue false)
              

                       decorate_svg(svg, agents).html_safe
              

                     else
              

                -      tag('img', src: URI('https://chart.googleapis.com/chart').tap { |uri|
              

                -            uri.query = URI.encode_www_form(cht: 'gv', chl: agents_dot(agents))
              

                -          })
              

                +      uriquery = URI.encode_www_form(cht: 'gv', chl: agents_dot(agents))
              

                +      #Get query maximum length should be under 2048 bytes with including "chart?" of google chart request url
              

                +      if uriquery.length > 2042
              

                +        "Too many agent to display, please check unused agents"
              

                +      else
              

                +        tag('img', src: URI('https://chart.googleapis.com/chart').tap { |uri|
              

                +              uri.query = uriquery
              

                +	    })
              

                +      end
              

                     end
              

                   end