Visual studio error, all code lines contains error references not mapped, but it's buildable and already NuGet updated

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Visual studio error, all code lines contains error references not mapped, but it's buildable and already NuGet updated

CodePudding user response：

kindly refer to this article for solving your issue. https://learn.microsoft.com/en-us/visualstudio/ide/troubleshooting-broken-references?view=vs-2022