I checked to see if the HALion Sonic files were corrupted and if they could be loaded in another DAW software (Cakewalk by BandLab). As a result, HALlion Sonic could be loaded in that DAW.
Also, Cubase now loads the Cakewalk by BandLab’s instrument even though it does not load HALion Sonic.
From the results, there may be a problem with the Cubase software.