Check why highchart is loeaded twice and produce an javascript error.

[Garllon]

The gem is working, but it is still producing the error and i like to now why.

Uncaught Error: Highcharts error #16: www.highcharts.com/errors/16/
    p highcharts.source.js:11
    d highcharts.source.js:11
    <anonymous> highstock.source.js:8
    <anonymous> highstock.source.js:8