GetChartDataAsync() fails to deserialize JSON object into IList<MarketChartData>

[misthema]

Using this line:
data = Shared.PoloniexClient.Markets.GetChartDataAsync(CurrencyPair.Parse(market), MarketPeriod, epoch, DateTime.UtcNow).Result;

...gives me these errors:

System.AggregateException: One or more errors occurred. ---> Newtonsoft.Json.JsonSerializationException: Cannot deserialize the current JSON object (e.g. {"name":"value"}) into type 'System.Collections.Generic.IList`1[Jojatekok.PoloniexAPI.MarketTools.MarketChartData]' because the type requires a JSON array (e.g. [1,2,3]) to deserialize correctly.
To fix this error either change the JSON to a JSON array (e.g. [1,2,3]) or change the deserialized type so that it is a normal .NET type (e.g. not a primitive type like integer, not a collection type like an array or List<T>) that can be deserialized from a JSON object. JsonObjectAttribute can also be added to the type to force it to deserialize from a JSON object.
Path 'error', line 1, position 9.
   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.CreateValueInternal(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 Jojatekok.PoloniexAPI.Helper.DeserializeObject[T](JsonSerializer serializer, String value) in D:\C#\libs\PoloniexApi.NET\PoloniexApi.Net-1.2.0-source\PoloniexApi.Net\Helper.cs:line 51
   at Jojatekok.PoloniexAPI.ApiWebClient.GetData[T](String command, Object[] parameters) in D:\C#\libs\PoloniexApi.NET\PoloniexApi.Net-1.2.0-source\PoloniexApi.Net\General\ApiWebClient.cs:line 43
   at Jojatekok.PoloniexAPI.MarketTools.Markets.GetData[T](String command, Object[] parameters) in D:\C#\libs\PoloniexApi.NET\PoloniexApi.Net-1.2.0-source\PoloniexApi.Net\MarketTools\Markets.cs:line 107
   at Jojatekok.PoloniexAPI.MarketTools.Markets.GetChartData(CurrencyPair currencyPair, MarketPeriod period, DateTime startTime, DateTime endTime) in D:\C#\libs\PoloniexApi.NET\PoloniexApi.Net-1.2.0-source\PoloniexApi.Net\MarketTools\Markets.cs:line 59
   at Jojatekok.PoloniexAPI.MarketTools.Markets.<>c__DisplayClass14_0.<GetChartDataAsync>b__0() in D:\C#\libs\PoloniexApi.NET\PoloniexApi.Net-1.2.0-source\PoloniexApi.Net\MarketTools\Markets.cs:line 91
   at System.Threading.Tasks.Task`1.InnerInvoke()
   at System.Threading.Tasks.Task.Execute()
   --- End of inner exception stack trace ---
   at System.Threading.Tasks.Task.ThrowIfExceptional(Boolean includeTaskCanceledExceptions)
   at System.Threading.Tasks.Task`1.GetResultCore(Boolean waitCompletionNotification)
   at System.Threading.Tasks.Task`1.get_Result()

PoloniexApi.NET version: 1.2.0.0
Newtonsoft.Json version: 6.0.0.0
Newtonsoft.MsgPack version: 1.0.0.0

[misthema]

Okay, it looks like the errors are not handled? I got it working with some debugging. The error came from these JSON contents:
{"error":"Invalid currency pair."}
{"error":"Please specify a valid period."}