[Dev] Corrected a few things in error handling when parsing a date time from the ui command line.
[Dev] Corrected a few things in error handling when parsing a date time from the ui command line.

airsim/tvlsim,airsim/tvlsim,airsim/tvlsim,airsim/tvlsim,airsim/tvlsim,airsim/tvlsim,airsim/tvlsim,airsim/tvlsim,airsim/tvlsim