Error in server application '/key4register'

An error occured Your session has expired
2024-04-27 09:19:28 - Server - DNS secure.key4events.com - Register Version 2.47.22
Url reached : https://secure.key4events.com/key4register/UserControl/WebSite/schedule.aspx?e=419&dl=files/presentations/15716/Article_ATEC-ITS_2016-RDVA31_vf.pdf