Error in server application '/key4register'

An error occured Your session has expired
2024-05-14 15:08:25 - Server - DNS secure.key4events.com - Register Version 2.48.28
Url reached : https://secure.key4events.com/key4register/UserControl/WebSite/schedule.aspx?e=163&dl=files/presentations/1837/V2_3_PEROTIN-COLLARD_J-M.pdf