Motion Controller Map crash, UWP Unreal release

I try microsoft-uwp unreal release at https://github.com/MICROSOFT-XBOX-ATG/MICROSOFT_UWP_UNREAL/tree/dev_MixedReality, and follow the instruction at https://github.com/MICROSOFT-XBOX-ATG/MICROSOFT_UWP_UNREAL/blob/dev_MixedReality/docs/UnrealEngineWithWindowsMixedReality.docx

but when i open the MotionControllerMap based on the instruction, the UE suddenly crash like this.

any advice

bump for help!