JsonException: A possible object cycle was detected which is not supported. This can either be due to a cycle or if the object depth is larger than

Question

In my web api when i run project for get data from database got this error .net core 3.1

JsonException: A possible object cycle was detected which is not

Answer 1

following code is working for me in dotnet 5.0 :

  services.AddControllersWithViews()
                        .AddJsonOptions(o => o.JsonSerializerOptions
                        .ReferenceHandler = ReferenceHandler.Preserve);