Error in server application '/key4register'

An error occured Your session has expired
2026-03-20 10:31:18 - Server - DNS secure.key4events.com - Register Version 2.71.17
Url reached : https://secure.key4events.com/key4register/scripts/PDFViewer/images/client/1960/files/pdfviewer/pdfviewer_44511/abstract_book_pdf.pdf