fixed the launch error I was gettign

.vscode/launch.json

@@ -10,7 +10,7 @@
             "request": "launch",
             "preLaunchTask": "build",
             // If you have changed target frameworks, make sure to update the program path.
-            "program": "${workspaceFolder}/bin/Debug/net7.0/vassago.dll",
+            "program": "${workspaceFolder}/bin/Debug/net8.0/vassago.dll",
             "args": [],
             "cwd": "${workspaceFolder}",
             "stopAtEntry": false,

Models/User.cs

@@ -17,6 +17,8 @@ public class User
     public string DisplayName
     {
         get
+        {
+            if (Accounts?.Any() ?? false)
             {
                 return Accounts.Select(a => a.DisplayName).Distinct()
                     .MaxBy(distinctName =>
@@ -24,5 +26,10 @@ public class User
                         .Where(selectedName => selectedName == distinctName).Count()
                     );
             }
+            else
+            {
+                return $"[accountless {Id}";
+            }
+        }
     }
 }

WebInterface/Controllers/HomeController.cs

@@ -166,11 +166,10 @@ public class HomeController : Controller
     }
     private void serializeUser(ref StringBuilder sb, ref List<Account> allAccounts, User currentUser)
     {
-        sb.Append($"{{\"text\": " + 
-        $"\"<a href=\\\"{Url.ActionLink(action: "Details", controller: "Users", values: new {id = currentUser.Id})}\\\">" 
-            + currentUser.DisplayName + 
-            "</a>\", ");
-//         \"{currentUser.DisplayName}\", ");
+        Console.WriteLine(currentUser);
+        sb.Append($"{{\"text\": \"<a href=\\\"{Url.ActionLink(action: "Details", controller: "Users", values: new {id = currentUser.Id})}\\\">");
+        sb.Append(currentUser.DisplayName);
+        sb.Append("</a>\", ");
         var ownedAccounts = allAccounts.Where(a => a.IsUser == currentUser);
         sb.Append("nodes: [");
         sb.Append($"{{\"text\": \"owned accounts:\", \"expanded\":true, \"nodes\": [");