I had the same error today on v. 2022-03-03. I entered a new activity and clicked Cancel on another instance of activity window with status "new". This crashed the client. I believe one of those Activity windows was opened via "New Activity" drill down in the report.
I could not repeat is again.

2023-04-06 09:09:16 (1) AK/THREAD(12) 1 running reports, duration for ActCalendarRn was 0.12 seconds, of which 0.00 was used in 0 steps
2023-04-06 09:09:46 (1) SYSTEM Logoff xxxx:53525: exception on fd
2023-04-06 09:09:46 (1) AK CallHal("CallUnRegisterFromPresenceServer")