C#反序列化avro 400 请求报错 

//Define the schema in JSON
            const string Schema = @"{
            uot;"type"":{""type"" : ""map&ot;",""values"" :""string""}
            
            //Create a generic serializer based on the schema
            var serializer = AvroSerializer.CreateGeneric(Schema);
            var rootSchema = serializer.WriterSchema as RecordSchema;

            MemoryStream stream = new MemoryStream(bt);

            //dynamic actual = serializer.Deserialize(stream);

            using (var reader = AvroContainer.CreateGenericReader(stream))
            {
                while (reader.MoveNext())
                {
                    foreach (dynamic record in reader.Current.Objects)
                    {
                        //var sequenceNumber = record.SequenceNumber;
                        var headerText = System.Text.Encoding.UTF8.GetString(record.headers);
                        Console.WriteLine($"{headerText}");
                    }
                }
            }