After migrating from .NET Core 2.1 to .NET Core 3.1, publish has a problem

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After migrating my project from .NET Core 2.1 to .NET Core 3.1, everything works fine but when publishing the project, Iget this error:

System.Runtime.CompilerServices.Unsafe doesn't support netcoreapp3.1. Consider updating your TargetFramework to netcoreapp3.1 or later.

asp.net-core-3.1 nuget-package publish model-view-controller c#
2 Answers

I resolved the problem after remove the tag <RuntimeIdentifier> from the publish profile.

user_53377160

@@Morteza install System.Runtime.CompilerServices.Unsafe version 6.0.0 from NuGet into your project.

Install-Package System.Runtime.CompilerServices.Unsafe -Version 6.0.0
user_11843580
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