Setup web application with PHPDesktop

There is an application ready in PHP with MYSQL which works perfectly when used with a browser. We are looking to convert it to a desktop application using PHPDesktop. Many things are working fine but there are few issues like: Using mpdf library, it forces to save the pdf instead of directly opening the print dialog box, however, the same thing works in browsers like chrome and firefox. We need to open the print dialog box on clicking print button instead of saving it as a pdf. You are required to solve such minor issues and help to deploy it locally.