A temporary walkaround was posted on this forum, and when I applied it as described in that post, my problem was resolved.
Posting by Gameron2:
Required Actions:
Overwiter files in “Mocap” folder of UE v5.02(UE5.02 project folder - Content - MetaHumans - Common -Common - Mocap) with files in “Mocap” folder of UE v4.2x(UE4 project folder - Content - MetaHumans - Common -Common - Mocap.
In case you need to restore the original state later, back up or rename the original files in UE5.02 Mocap folder before overwrite them.
The files in “Mocap” folder are “mh_arkit_mapping_pose.uasset” and “mh_arkit_mapping_anim.uasset” in my case.
