Self referencing loop detected for property despite ReferenceLoopHandling = ReferenceLoopHandling.Ignore

[hades200082]

builder.Services.AddIdempotentMinimalAPI(new IdempotencyOptions
{
    ExpireHours = 2,
    IsIdempotencyOptional = false,
    CacheOnlySuccessResponses = true,
    HeaderKeyName = "Idempotency-Key",
    SerializerSettings = new JsonSerializerSettings
    {
        ReferenceLoopHandling = ReferenceLoopHandling.Ignore
    }
});

Yet still I get...

{
  "type": "https://tools.ietf.org/html/rfc9110#section-15.6.1",
  "title": "Newtonsoft.Json.JsonSerializationException",
  "status": 500,
  "detail": "Self referencing loop detected for property 'Module' with type 'System.Reflection.RuntimeModule'. Path '[0][0].Member.Module.Assembly.EntryPoint'.",
  "exception": {
    "details": "Newtonsoft.Json.JsonSerializationException: Self referencing loop detected for property 'Module' with type 'System.Reflection.RuntimeModule'. Path '[0][0].Member.Module.Assembly.EntryPoint'.\r\n   at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.CheckForCircularReference(JsonWriter writer, Object value, JsonProperty property, JsonContract contract, JsonContainerContract containerContract, JsonProperty containerProperty)\r\n   at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.CalculatePropertyValues(JsonWriter writer, Object value, JsonContainerContract contract, JsonProperty member, JsonProperty property, JsonContract& memberContract, Object& memberValue)\r\n   at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeObject(JsonWriter writer, Object value, JsonObjectContract contract, JsonProperty member, JsonContainerContract collectionContract, JsonProperty containerProperty)\r\n   at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeValue(JsonWriter writer, Object value, JsonContract valueContract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerProperty)\r\n   at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeObject(JsonWriter writer, Object value, JsonObjectContract contract, JsonProperty member, JsonContainerContract collectionContract, JsonProperty containerProperty)\r\n   at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeValue(JsonWriter writer, Object value, JsonContract valueContract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerProperty)\r\n   at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeObject(JsonWriter writer, Object value, JsonObjectContract contract, JsonProperty member, JsonContainerContract collectionContract, JsonProperty containerProperty)\r\n   at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeValue(JsonWriter writer, Object value, JsonContract valueContract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerProperty)\r\n   at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeObject(JsonWriter writer, Object value, JsonObjectContract contract, JsonProperty member, JsonContainerContract collectionContract, JsonProperty containerProperty)\r\n   at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeValue(JsonWriter writer, Object value, JsonContract valueContract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerProperty)\r\n   at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeObject(JsonWriter writer, Object value, JsonObjectContract contract, JsonProperty member, JsonContainerContract collectionContract, JsonProperty containerProperty)\r\n   at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeValue(JsonWriter writer, Object value, JsonContract valueContract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerProperty)\r\n   at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeList(JsonWriter writer, IEnumerable values, JsonArrayContract contract, JsonProperty member, JsonContainerContract collectionContract, JsonProperty containerProperty)\r\n   at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeValue(JsonWriter writer, Object value, JsonContract valueContract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerProperty)\r\n   at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeList(JsonWriter writer, IEnumerable values, JsonArrayContract contract, JsonProperty member, JsonContainerContract collectionContract, JsonProperty containerProperty)\r\n   at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeValue(JsonWriter writer, Object value, JsonContract valueContract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerProperty)\r\n   at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.Serialize(JsonWriter jsonWriter, Object value, Type objectType)\r\n   at Newtonsoft.Json.JsonSerializer.SerializeInternal(JsonWriter jsonWriter, Object value, Type objectType)\r\n   at Newtonsoft.Json.JsonSerializer.Serialize(JsonWriter jsonWriter, Object value, Type objectType)\r\n   at Newtonsoft.Json.JsonConvert.SerializeObjectInternal(Object value, Type type, JsonSerializer jsonSerializer)\r\n   at Newtonsoft.Json.JsonConvert.SerializeObject(Object value, Type type, JsonSerializerSettings settings)\r\n   at Newtonsoft.Json.JsonConvert.SerializeObject(Object value)\r\n   at IdempotentAPI.Core.Idempotency.GenerateRequestsDataHashMinimalApiAsync(IList`1 arguments, HttpRequest httpRequest)\r\n   at IdempotentAPI.Core.Idempotency.PrepareMinimalApiIdempotencyAsync(HttpContext httpContext, IList`1 arguments)\r\n   at IdempotentAPI.MinimalAPI.IdempotentAPIEndpointFilter.InvokeAsync(EndpointFilterInvocationContext context, EndpointFilterDelegate next)\r\n   at IdempotentAPI.MinimalAPI.IdempotentAPIEndpointFilter.InvokeAsync(EndpointFilterInvocationContext context, EndpointFilterDelegate next)\r\n   at Microsoft.AspNetCore.Http.RequestDelegateFactory.<ExecuteValueTaskOfObject>g__ExecuteAwaited|128_0(ValueTask`1 valueTask, HttpContext httpContext, JsonTypeInfo`1 jsonTypeInfo)\r\n   at Microsoft.AspNetCore.Http.RequestDelegateFactory.<>c__DisplayClass101_2.<<HandleRequestBodyAndCompileRequestDelegateForJson>b__2>d.MoveNext()\r\n--- End of stack trace from previous location ---\r\n   at Microsoft.AspNetCore.Routing.EndpointMiddleware.<Invoke>g__AwaitRequestTask|7_0(Endpoint endpoint, Task requestTask, ILogger logger)\r\n   at Microsoft.AspNetCore.Diagnostics.DeveloperExceptionPageMiddlewareImpl.Invoke(HttpContext context)",
    "headers": {
      "Accept": [
        "*/*"
      ],
      "Host": [
        "localhost:58178"
      ],
      "User-Agent": [
        "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36 Edg/131.0.0.0"
      ],
      "Accept-Encoding": [
        "gzip, deflate, br, zstd"
      ],
      "Accept-Language": [
        "en-GB,en;q=0.9,en-US;q=0.8"
      ],
      "Content-Type": [
        "application/json"
      ],
      "Origin": [
        "https://localhost:7044"
      ],
      "Referer": [
        "https://localhost:7044/"
      ],
      "Content-Length": [
        "61"
      ],
      "sec-ch-ua-platform": [
        "\"Windows\""
      ],
      "sec-ch-ua": [
        "\"Microsoft Edge\";v=\"131\", \"Chromium\";v=\"131\", \"Not_A Brand\";v=\"24\""
      ],
      "sec-ch-ua-mobile": [
        "?0"
      ],
      "sec-fetch-site": [
        "same-site"
      ],
      "sec-fetch-mode": [
        "cors"
      ],
      "sec-fetch-dest": [
        "empty"
      ],
      "priority": [
        "u=1, i"
      ]
    },
    "path": "/todo-items",
    "endpoint": "Todo List Items",
    "routeValues": {}
  },
  "traceId": "00-0f859ac80ba62d9ac5737862259a07e4-7cf9168f48e1bbe0-01"
}