Net core 报 Could not load file or assembly ‘System.Security.Permissions 错误
System.IO.FileNotFoundException:“Could not load file or assembly 'System.Security.Permissions, Version=4.0.3.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51'. 系统找不到指定的文件。安装最新版 Newtonsoft.Json 即可解决问题。打开项目“管理NuGet程序包(N)..”
