This solution should help me explain my desire

WebMVC/Controllers/ApiController.cs

@@ -1,5 +1,6 @@
 using Microsoft.AspNetCore.Mvc;
 using Microsoft.AspNetCore.Mvc.Filters;
+using RepositoryLibrary;
 using System;
 using System.Collections.Generic;
 using System.Linq;
@@ -10,10 +11,21 @@ namespace WebMVC.Controllers
 {
     public class ApiController : Controller
     {
+        private readonly IRepository _repository;
+        public ApiController(IRepository repository)
+        {
+            _repository = repository;
+        }
         public override void OnActionExecuted(ActionExecutedContext context)
         {
-            // This is where I capture the error from the ApiService
+            // This is where I capture the error from when calling the ApiService
             base.OnActionExecuted(context);
         }
+
+        public async Task<IActionResult> Lookup()
+        {
+            var lookup = await _repository.Lookup();
+            return Ok(lookup);
+        }
     }
 }

WebMVC/Controllers/HomeController.cs

@@ -5,6 +5,7 @@ using System.Linq;
 using System.Threading.Tasks;
 using Microsoft.AspNetCore.Mvc;
 using Microsoft.Extensions.Logging;
+using RepositoryLibrary;
 using WebMVC.Models;
 
 namespace WebMVC.Controllers
@@ -12,10 +13,12 @@ namespace WebMVC.Controllers
     public class HomeController : Controller
     {
         private readonly ILogger<HomeController> _logger;
+        private readonly IRepository _repository;
 
-        public HomeController(ILogger<HomeController> logger)
+        public HomeController(ILogger<HomeController> logger, IRepository repository)
         {
             _logger = logger;
+            _repository = repository;
         }
 
         public IActionResult Index()
@@ -23,8 +26,13 @@ namespace WebMVC.Controllers
             return View();
         }
 
-        public IActionResult Privacy()
+        public async Task<IActionResult> Privacy()
         {
+            // To get this working, I have make a call here in the Privacy page.
+            // Making the call in the Home/Index page was always returning a 404 Not Found.
+            // The second project was not starting quickly enough.
+
+            var lookup = await _repository.Lookup();
             return View();
         }
 

WebMVC/Startup.cs

@@ -7,6 +7,7 @@ using Microsoft.AspNetCore.Hosting;
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Hosting;
+using RepositoryLibrary;
 
 namespace WebMVC
 {
@@ -19,13 +20,19 @@ namespace WebMVC
 
         public IConfiguration Configuration { get; }
 
-        // This method gets called by the runtime. Use this method to add services to the container.
         public void ConfigureServices(IServiceCollection services)
         {
             services.AddControllersWithViews();
+            if (false)
+            {
+                services.AddScoped<IRepository, LocalRepository>();
+            }
+            else
+            {
+                services.AddScoped<IRepository, HostedRepository>();
+            }
         }
 
-        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
         public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
         {
             if (env.IsDevelopment())
@@ -39,7 +46,21 @@ namespace WebMVC
             app.UseStaticFiles();
 
             app.UseRouting();
-
+            app.Use(async (context, next) =>
+            {
+                try
+                {
+                    await next();
+                }
+                catch (Exception ex)
+                {
+                    // Here I want to log the exception with the StackTrace.
+                    // The StackTrace when local is what I want
+                    // The StackTrace when Hosted is only to the Hosted. I'd 
+                    // like to see the StackTrace returned from ApiService.
+                    return;
+                }
+            });
             app.UseAuthorization();
 
             app.UseEndpoints(endpoints =>

WebMVC/WebMVC.csproj

@@ -4,4 +4,9 @@
     <TargetFramework>netcoreapp3.1</TargetFramework>
   </PropertyGroup>
 
+  <ItemGroup>
+    <ProjectReference Include="..\RepositoryLibrary\RepositoryLibrary.csproj" />
+    <ProjectReference Include="..\SharedLibrary\SharedLibrary.csproj" />
+  </ItemGroup>
+
 </Project>