Error in server application '/key4register'

An error occured Your session has expired
2024-05-03 14:29:33 - Server - DNS secure.key4events.com - Register Version 2.47.24
Url reached : https://secure.key4events.com/key4register/UserControl/WebSite/schedule.aspx?e=947&dl=files/presentations/46002/S351_V5_TOP15_11_Derm-17.pdf