Error building Player on window phone

Unity Engine
,
1

I got this error when build on window phone, somebody help me:
Error building Player: Exception: Error: method System.Text.Encoding System.Text.Encoding::GetEncoding(System.Int32) doesn’t exist in target framework. It is referenced from Assembly-CSharp.dll at System.Text.Encoding SsEncoding::get_SJIS().

2

help!

3

someone help me !

4

This API is not available on Windows Phone.

5

Use the overload with string - Encoding.GetEncoding Method (System.Text) | Microsoft Learn

6

Hello, you can also create your own proxy plugin, and windows phone plugin.

http://docs.unity3d.com/Manual/wp8-plugins.html