Issue rendering pdf

[dstarh]

On occasion we get a Shrimp::RenderingError with no other information than that.

Our controller calling Shrimp is relatively simple and works just fine for many of our pdfs but for one in particular it fails some of the time

The code is

url = params[:url] || request.url
    filename = params[:filename].delete(' ') || "report"
    pdf = Shrimp::Phantom.new(url, {}, cookies).to_string!
    cookies['fileDownload'] = 'true' # allow to notify jqueryDownload when download is finished
    send_data pdf,
              filename: "#{filename}_#{Date.today.strftime('%Y%m%d')}",
              type: "application/pdf",
              disposition: "attachment"

and the error is

A Shrimp::RenderingError occurred in pdf#create:

  Rendering Error: 
  app/controllers/pdf_controller.rb:8:in `create'

the backtrace is

  app/controllers/pdf_controller.rb:8:in `create'
  config/initializers/syslog.rb:15:in `log_for_auditing'
  app/controllers/application_controller.rb:103:in `contextual_cobrand'
  app/middleware/images_proxy.rb:15:in `call'
  app/middleware/api_proxy.rb:44:in `call'