LiveActivity crashs in iOS 14

LiveActivity is effective in ios16, but error reported only in ios14 Some error message reported from Xcode:

Process: LiveExtension [20099] Path: my.app/PlugIns/LiveExtension.appex/LiveExtension

libswiftCore.dylib swift_getAssociatedTypeWitness SwiftUI BodyAccessor.makeBody(container:inputs:fields:) SwiftUl closure #1 in WidgetGraph.init<A>(rootBundle:)

LiveActivity crashs in iOS 14
 
 
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