MJCS minimum version increased from API 19 to API 21 for AndroidX Renderscroipt crashing to support Native Renderscript as a workaround.
For using EnterpriseService.submitLiveness() call to build LivenessRequest you need to use RequestLiveness().convert(mJourneyID, mAggregatedResult) as there are extra security values now.
For Kotlin user we Offer EnterpriseService.Builder interface.