This solution should help me explain my desire

ApiService/Startup.cs

@@ -1,14 +1,21 @@
 using System;
 using System.Collections.Generic;
+using System.IO;
 using System.Linq;
+using System.Net;
+using System.Runtime.Serialization.Json;
+using System.Text;
 using System.Threading.Tasks;
 using Microsoft.AspNetCore.Builder;
 using Microsoft.AspNetCore.Hosting;
+using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.Mvc;
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Hosting;
 using Microsoft.Extensions.Logging;
+using RepositoryLibrary;
+using SharedLibrary.Models;
 
 namespace ApiService
 {
@@ -24,6 +31,7 @@ namespace ApiService
         // This method gets called by the runtime. Use this method to add services to the container.
         public void ConfigureServices(IServiceCollection services)
         {
+            services.AddScoped<IRepository, LocalRepository>();
             services.AddControllers();
         }
 
@@ -37,6 +45,30 @@ namespace ApiService
 
             app.UseRouting();
 
+            app.Use(async (context, next) =>
+            {
+                try
+                {
+                    await next();
+                }
+                catch (Exception ex)
+                {
+                    var error = new RepositoryError
+                    {
+                        Information = ex.Message,
+                        StackTrack = ex.StackTrace
+                    };
+                    var dc = new DataContractJsonSerializer(typeof(RepositoryError));
+                    using (var ms = new MemoryStream())
+                    {
+                        dc.WriteObject(ms, error);
+                        var response = new StringBuilder(Encoding.UTF8.GetString(ms.ToArray()));
+                        context.Response.StatusCode = (int)HttpStatusCode.BadRequest;
+                        context.Response.ContentType = "application/json";
+                        await context.Response.WriteAsync(response.ToString());
+                    }
+                }
+            });
             app.UseAuthorization();
 
             app.UseEndpoints(endpoints =>