private var personDaoImpl: SysPersonDaoImpl = null?
generally stated time specified may be empty but the actual is null, kotlin not intelligent conversion, modified to:
private late init var personDaoImpl: SysPersonDaoImpl
private var personDaoImpl: SysPersonDaoImpl = null?
generally stated time specified may be empty but the actual is null, kotlin not intelligent conversion, modified to:
private late init var personDaoImpl: SysPersonDaoImpl