The target framework 'netcoreapp3.1' is out of support and will not receive security updates in the future. Please refer to https://aka.ms/dotnet-core-support for more information about the support policy.

The target framework 'net5.0' is out of support and will not receive security updates in the future. Please refer to https://aka.ms/dotnet-core-support for more information about the support policy.

The target framework 'netcoreapp3.1' is out of support and will not receive security updates in the future. Please refer to https://aka.ms/dotnet-core-support for more information about the support policy.

ProjectReference 'D:\a\uno.check\uno.check\UnoCheck.SdkResolver\Microsoft.DotNet.MSBuildSdkResolver.csproj' was resolved using '.NETFramework,Version=v4.7.2' instead of the project target framework '.NETCoreApp,Version=v3.1'. This project may not be fully compatible with your project.

The target framework 'net5.0' is out of support and will not receive security updates in the future. Please refer to https://aka.ms/dotnet-core-support for more information about the support policy.

ProjectReference 'D:\a\uno.check\uno.check\UnoCheck.SdkResolver\Microsoft.DotNet.MSBuildSdkResolver.csproj' was resolved using '.NETFramework,Version=v4.7.2' instead of the project target framework '.NETCoreApp,Version=v5.0'. This project may not be fully compatible with your project.

ProjectReference 'D:\a\uno.check\uno.check\UnoCheck.SdkResolver\Microsoft.DotNet.MSBuildSdkResolver.csproj' was resolved using '.NETFramework,Version=v4.7.2' instead of the project target framework '.NETCoreApp,Version=v6.0'. This project may not be fully compatible with your project.

The annotation for nullable reference types should only be used in code within a '#nullable' annotations context.

The variable 'e' is declared but never used