chartkick

I am using Rails 4, Wicked_PDF and Chartkick Gem's For Google Charts I use: <%= javascript_include_tag "//www.google.com/jsapi", "chartkik" %> The html view comes up with charts and everything as expected. When I append .pdf to the url the pdf document shows in the browser but the ChartKick charts do not show. The following error appears where the chart should be: Error Loading Chart: No adapter found I have found the following online in the PDFKit documentation. Resources aren't included in the PDF: Images, CSS, or JavaScript does not seem to be downloading correctly in the PDF. This is due

I'm trying to create a stacked bar chart using Rails Chartkick gem and I'm using Google charts API. I have use this line to generate the bar chart using chartkick. <%= bar_chart data, :library => {:isStacked => true} %> But what i'm getting is a simple bar chart not a stacked one.My question is what is the structure of the data which i should pass to data parameter. I have try passing an array, like(from google charts samples) [['Genre', 'Fantasy & Sci Fi', 'Romance', 'Mystery/Crime', 'General','Western', 'Literature', { role: 'annotation' } ],['2010', 10, 24, 20, 32, 18, 5, '']] but it didn't