Index: iknow-api/Program.cs
===================================================================
--- iknow-api/Program.cs	(revision cab02ada65fcd8feda776e5afc86a355f29c7f96)
+++ iknow-api/Program.cs	(revision b38c39caa5327b5c3dffc7da82ccae5b655835fa)
@@ -1,3 +1,4 @@
 using System.Text;
+using System.Text.Json.Serialization;
 using iknow_api.Data;
 using iknow_api.Repositories;
@@ -33,5 +34,9 @@
 });
 // Add services to the container.
-builder.Services.AddControllers();
+builder.Services.AddControllers()
+    .AddJsonOptions(options =>
+    {
+        options.JsonSerializerOptions.ReferenceHandler = ReferenceHandler.IgnoreCycles;
+    });
 builder.Services.AddOpenApi();