Convert HTML file to PDF

Hi Community!

I am trying to batch convert 100s of HTML downloaded files with a chart to a PDF (I can do one by one on chrome, and formatt is great) however I want to be able batch convert (a function that adobe can do for me). However when I convert even a single file from HTML to PDF using adobe, it doesn't convert the chart, it just drops it. Is there a setting or a script  I can change/run to make adobe convert the chart?

I have taken a snip on the HTML when chrome displays the chart. - not sure if that is helpful or not.

Thanks