Argument-1 %1 of intrinsic function FIND-DURATION is not compatible with argument-2 %2.
30
Cause . . . . . : Intrinsic function FIND-DURATION can only be used to find a duration between:
Two dates,
A date and a timestamp,
Two times,
A time and a timestamp, or
Two timestamps.
Recovery . . . : Change argument-1 or argument-2 to be compatible.