我试图从NuGet包管理器添加“SharePointPnPCore2016”包,但我得到这个错误: Failed to add reference. The package 'SharePointPnPCore2016' tried to add a framework reference to 'Microsoft.Office.Client.Policy, Version=16.0.0.0'
我在安装在Visual Studio 2017年后续的使用程序包管理器控制台NuGet包问题,如果错误的完整细节: install-package : Unable to load the service index for source https://api.nuget.org/v3/index.json.
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