solution does not compile with preview9 of .net core

[fjod]

Severity Code Description Project File Line Suppression State
Error CS0234 The type or namespace name 'Layouts' does not exist in the namespace 'Microsoft.AspNetCore.Components' (are you missing an assembly reference?) CSInn.Presentation.Blazor C:\Users\fourj\Source\Repos\CSInn\src\CSInn.Presentation.Blazor_Imports.razor 3 Active

Possible solution is here
dotnet/aspnetcore#13133

honestly I would suggest to wait until Microsoft releases .net core 3.0 without "preview" :)