Update error-handling.md (dotnet#16193)

* Update error-handling.md

* Update error-handling.md

* Update error-handling.md

Author: Rick-Anderson

aspnetcore/fundamentals/error-handling.md

@@ -80,6 +80,8 @@ Here's an example of using a lambda for exception handling:
 
 [!code-csharp[](error-handling/samples/2.x/ErrorHandlingSample/Startup.cs?name=snippet_HandlerPageLambda)]
 
+In the preceding code, `await context.Response.WriteAsync(new string(' ', 512));` is added so the Internet Explorer browser displays the error message rather than an IE error message. For more information, see [this GitHub issue](https://github.com/aspnet/AspNetCore.Docs/issues/16144).
+
 > [!WARNING]
 > Do **not** serve sensitive error information from <xref:Microsoft.AspNetCore.Diagnostics.IExceptionHandlerFeature> or <xref:Microsoft.AspNetCore.Diagnostics.IExceptionHandlerPathFeature> to clients. Serving errors is a security risk.