Rotativa BuildPdf works on local machine but not on production server

I am using Rotativa to generate a pdf from a view I created. Locally this works fine, the PDF is stored on my local machine, and the email function then attaches and sends the file. But when I release it on our server, it basically breaks down into this part:

var binary = pdf.BuildPdf(this.ControllerContext);

      

        
        
        
      

    

The website takes a while to load and then finally just says

An error occurred while processing your request.

What I did to test this was redirecting to the actual view to be generated in pdf until this error is shown. I thought the problem was that the website doesn't have any write permissions, but can create directories in the required folder up to the above part.

What can I do to fix this problem?

Here is my complete section of code for this part:

string Switches = string.Format("--print-media-type --header-html {0} --footer-html {1}", Url.Action("Header", "Home", new { area = "" }, "http"), Url.Action("Footer", "Home", new { area = "" }, "http"));

                var fileName = ReportName+objScor.Name+"_"+objScor.Surname + DateTime.Now.ToString("dd MMM yyyy HHmmss") + ".pdf";

                var filePath =(@"C:\\PDFReport\\" + fileName);

                if (!System.IO.File.Exists(@"C:\\PDFReport\\"))
                {
                    Directory.CreateDirectory(@"C:\\PDFReport\\");
                }




                var pdf = new Rotativa.ViewAsPdf("Report", report)
                {
                    FileName = fileName,
                    CustomSwitches = Switches

                };
                var binary = pdf.BuildPdf(this.ControllerContext);

      

        
        
        
      

    

Thanks in advance.