The FooEvents PDF Tickets plugin makes use of the Dompdf PHP library to generate .pdf documents. We will update the Dompdf library in future plugin updates, however, should you wish to change or update the version of the library yourself, here are the steps:

  1. Download the required version of the Dompdf library from https://github.com/dompdf/dompdf

  2. Extract the .zip archive

Copy and paste the extracted directory into the following directory: /fooevents_pdf_tickets/vendors/dompdf/dompdf