aws-lambda-dotnet-fail

{
    "errorType" : "JsonReaderException",
    "errorMessage" : "Unexpected character encountered while parsing value: {. Path '', line 1, position 1.",
    "stackTrace"   : [
        "at Newtonsoft.Json.JsonTextReader.ReadStringValue(ReadType readType)",
        "at Newtonsoft.Json.JsonTextReader.ReadAsString()",
        "at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.ReadForType(JsonReader reader, JsonContract contract, Boolean hasConverter)",
        "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[T](JsonReader reader)",
        "at lambda_method(Closure , Stream , Stream , ContextInfo )"
    ]
}