QML type registration emits "qt6quick_metatypes.json: illegal value"

Check out the new Qt 6.2 starting July 2.
Configure Qt as follows
configure -no-warnings-are-errors -nomake examples -prefix C:\Users\alportal\dev\qt6_desktop\qtbase -debug-and-release
During the build, you will see these error messages (but the build will continue)
[4537/10634] Automatic QML type registration for target LabsAnimation
Error 5: Bad value while parsing C:/Users/alportal/dev/qt6_desktop/qtbase/lib/metatypes/qt6quick_metatypes.json
Automatic QML type registration for [4541/10634] target QuickParticlesPrivate
Error while parsing C:/Users/alportal/dev/qt6_desktop/qtbase/lib/metatypes/qt6quick_metatypes.json 5: Bad value
[4553/10634] Automatic QML type registration for target LabsWavefrontMesh
Error while parsing C:/Users/alportal/dev/qt6_desktop/qtbase/lib/metatypes/qt6quick_metatypes.json 5: Bad value
Automatic QML type registration for [4555/10634] target LabsSharedImage
Error 5 while parsing C:/Users/alportal/dev/qt6_desktop/qtbase/lib/metatypes/qt6quick_metatypes.json: bad value
The file size of qtbase/lib/metatypes/qt6quick_metatypes.json is 0