Do someone konw the problem of ChineseLunarsolarCalander GetMonth() exception?

Exception: GetMonth
System.Globalization.CCEastAsianLunisolarCalendar.GetMonth (DateTime date) (at /Users/builduser/buildslave/mono/build/mcs/class/corlib/System.Globalization/CalendricalCalculations.cs:1929)
System.Globalization.EastAsianLunisolarCalendar.GetMonth (DateTime time) (at /Users/builduser/buildslave/mono/build/mcs/class/corlib/System.Globalization/EastAsianLunisolarCalendar.cs:159)
UserInfoUnit.Start () (at Assets/Scripts/Play/UserInfoUnit.cs:81)

It works well on Visual Studio 2015 but not Unity lasted version
Can someone help me? ><

Did you solve this problem?