Process completed with exit code 1.

ProjectReference 'D:\a\server\server\samples\Samples.Net48\Samples.Net48.csproj' was resolved using '.NETFramework,Version=v4.8' instead of the project target framework '.NETCoreApp,Version=v2.1'. This project may not be fully compatible with your project.

ProjectReference 'D:\a\server\server\samples\Samples.Net48\Samples.Net48.csproj' was resolved using '.NETFramework,Version=v4.8' instead of the project target framework '.NETCoreApp,Version=v2.1'. This project may not be fully compatible with your project.

.NET Core 2.1 is no longer supported and will not receive security updates in the future. Please refer to https://aka.ms/dotnet-core-support for more information about the .NET support policy.

.NET Core 3.1 is no longer supported and will not receive security updates in the future. Please refer to https://aka.ms/dotnet-core-support for more information about the .NET support policy.

.NET 5.0 is no longer supported and will not receive security updates in the future. Please refer to https://aka.ms/dotnet-core-support for more information about the .NET support policy.

ProjectReference 'D:\a\server\server\samples\Samples.Net48\Samples.Net48.csproj' was resolved using '.NETFramework,Version=v4.8' instead of the project target framework '.NETCoreApp,Version=v2.1'. This project may not be fully compatible with your project.