diff --git a/src/dotnet/QuantEngine.Web/Components/Layout/MainLayout.razor b/src/dotnet/QuantEngine.Web/Components/Layout/MainLayout.razor
index 7ad3359..e78df58 100644
--- a/src/dotnet/QuantEngine.Web/Components/Layout/MainLayout.razor
+++ b/src/dotnet/QuantEngine.Web/Components/Layout/MainLayout.razor
@@ -1,5 +1,7 @@
 @inherits LayoutComponentBase
 @inject Microsoft.AspNetCore.Hosting.IWebHostEnvironment WebHostEnvironment
+@using System.IO
+@using System.Text.Json
 
 <MudLayout>
     <MudAppBar Elevation="1">