Exception during loading effects for the ledger: {"Unknown 'type_i'='26'"}

Describe the bug Exception during loading effects for the ledger 384048: {“Unknown ‘type_i’=‘26’”}

https://laboratory.stellar.org/#explorer?resource=effects&endpoint=for_ledger&values=eyJsZWRnZXIiOiIzODIzNDkifQ%3D%3D&network=test

To Reproduce Steps to reproduce the behavior:

var server = new Server("https://horizon-testnet.stellar.org");

//Exception is thrown here!
var page = await _server.Effects.ForLedger(384048)
                .Limit(100)
                .Execute();

Expected behavior There should be no exception!

Screenshots

Desktop (please complete the following information):

• OS: [e.g. iOS]
• Browser [e.g. chrome, safari]
• Version [e.g. 22]

Smartphone (please complete the following information):

• Device: PC
• OS: Microsoft Windows 10 Pro
• Version 10.0.19041 Build 19041

Additional context

$exception | {“Unknown ‘type_i’=‘26’”} | Newtonsoft.Json.JsonSerializationException

Stack Trace: at stellar_dotnet_sdk.responses.EffectDeserializer.CreateResponse(Int32 type) at stellar_dotnet_sdk.responses.EffectDeserializer.ReadJson(JsonReader reader, Type objectType, EffectResponse existingValue, Boolean hasExistingValue, JsonSerializer serializer) at Newtonsoft.Json.JsonConverter1.ReadJson(JsonReader reader, Type objectType, Object existingValue, JsonSerializer serializer) at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.DeserializeConvertable(JsonConverter converter, JsonReader reader, Type objectType, Object existingValue) at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.PopulateList(IList list, JsonReader reader, JsonArrayContract contract, JsonProperty containerProperty, String id) at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateList(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, Object existingValue, String id) at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.SetPropertyValue(JsonProperty property, JsonConverter propertyConverter, JsonContainerContract containerContract, JsonProperty containerProperty, JsonReader reader, Object target) at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.PopulateObject(Object newObject, JsonReader reader, JsonObjectContract contract, JsonProperty member, String id) at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateObject(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerMember, Object existingValue) at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.SetPropertyValue(JsonProperty property, JsonConverter propertyConverter, JsonContainerContract containerContract, JsonProperty containerProperty, JsonReader reader, Object target) at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.PopulateObject(Object newObject, JsonReader reader, JsonObjectContract contract, JsonProperty member, String id) at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateObject(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerMember, Object existingValue) at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.Deserialize(JsonReader reader, Type objectType, Boolean checkAdditionalContent) at Newtonsoft.Json.JsonSerializer.DeserializeInternal(JsonReader reader, Type objectType) at Newtonsoft.Json.JsonSerializer.Deserialize(JsonReader reader, Type objectType) at Newtonsoft.Json.JsonConvert.DeserializeObject(String value, Type type, JsonSerializerSettings settings) at Newtonsoft.Json.JsonConvert.DeserializeObject(String value, Type type, JsonConverter[] converters) at Newtonsoft.Json.JsonConvert.DeserializeObject[T](String value, JsonConverter[] converters) at stellar_dotnet_sdk.responses.JsonSingleton.GetInstance[T](String content) at stellar_dotnet_sdk.requests.ResponseHandler1.<HandleResponse>d__0.MoveNext() at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Runtime.CompilerServices.TaskAwaiter1.GetResult() at stellar_dotnet_sdk.requests.RequestBuilder1.<Execute>d__71.MoveNext() at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Runtime.CompilerServices.TaskAwaiter1.GetResult() at stellar_dotnet_sdk.requests.RequestBuilderExecutePageable2.<Execute>d__1.MoveNext() at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Runtime.CompilerServices.TaskAwaiter1.GetResult()

[OttoVT]

thx

[KonstantinRyazantsev]

@Kirbyrawr is there any estimation on when this fix will be released? Is it possible to support new protocol features in advance, before the mainnet is upgraded?

We use dotnet-stellar-sdk lib in our production services and issues like this affect us significantly.

Can we help to avoid this somehow?