Error in server application '/key4register'

An error occured Your session has expired
2024-05-02 13:58:30 - Server - DNS secure.key4events.com - Register Version 2.47.22
Url reached : https://secure.key4events.com/key4register/UserControl/WebSite/schedule.aspx?e=748&dl=files/presentations/28982/S351_M21_INT26.pdf