Connecting to C:\www\sigex.com...
You are working with a preview version of the .NET Core SDK. You can define the SDK version via a global.json file in the current project. More at https://go.microsoft.com/fwlink/?linkid=869452
Onion.Website -> C:\Users\warning\source\repos\Onion\Onion.Website\bin\Release\netcoreapp2.1\Onion.Website.dll
dotnet exec "C:\Program Files\dotnet\sdk\NuGetFallbackFolder\microsoft.aspnetcore.razor.design\2.1.0-preview1-final\build\netstandard2.0\..\..\tools\Microsoft.AspNetCore.Razor.TagHelperTool.dll""obj\Release\netcoreapp2.1\Onion.Website.PrecompiledViews.dll" because it was not found.
C:\Program Files\dotnet\sdk\2.1.300-preview2-008533\Sdks\Microsoft.NET.Sdk\targets\Microsoft.NET.Publish.targets(137,5): Error MSB3030: Could not copy the file "obj\Release\netcoreapp2.1\Onion.Website.PrecompiledViews.dll" because it was not found.
C:\Program Files\dotnet\sdk\2.1.300-preview2-008533\Sdks\Microsoft.NET.Sdk\targets\Microsoft.NET.Publish.targets(137,5): Error MSB3030: Could not copy the file "obj\Release\netcoreapp2.1\Onion.Website.PrecompiledViews.pdb" because it was not found.
C:\Program Files\dotnet\sdk\2.1.300-preview2-008533\Sdks\Microsoft.NET.Sdk\targets\Microsoft.NET.Publish.targets(137,5): Error MSB3030: Could not copy the file "obj\Release\netcoreapp2.1\Onion.Website.PrecompiledViews.pdb" because it was not found.