[14:34:24] [Fatal] [yfzWebApi.Utils.SerializeHelper] : 对象Json({"orderdetailMdoel":{"opertype":1,"operid":156,"remark":""},"PayModels":[{"payname":"陶成云","payamt":"","paytype":1,"paychannel":"支付宝","operid":144,"currencytype":1,"branchid":3}],"watchesList":[{"ordermasterModel":{"odertype":1,"watchesbrand":"积家","watchestype":"Q3462430","watchescode":"3313803","watchesyear":"2019-01-01T00:00:00Z","orderamt":"60315","branchid":3,"customersource":"1","sellamt":null,"annex1":"1","isopen":2,"isstore":0,"sellbyrecid":"","recbysellid":"","goodtype":0,"num":0,"material":"","weight":"","color":"","norms":"","source":"","remark":"","tokeroperidList":[],"cooperateoperidList":[],"discountamt":"","visitoperid":0,"ispartnership":0},"ImgModels":[{"imgtype":20,"imgurl":"/Uploads/Images/9a8e2f1e-4d21-4d6e-863e-610c37ed7ce3.jpg","ingname":""},{"imgtype":1,"imgurl":"/Uploads/Images/e9ebfdd8-8f85-4995-965c-4217c113cb0b.png","ingname":""}],"PayModels":[]}]})反序列化(NewOrderApiModel)失败Newtonsoft.Json.JsonSerializationException: Error converting value {null} to type 'System.Decimal'. Path 'PayModels[0].payamt', line 1, position 101. ---> System.InvalidCastException: 空对象不能转换为值类型。
   在 System.Convert.ChangeType(Object value, Type conversionType, IFormatProvider provider)
   在 Newtonsoft.Json.Serialization.JsonSerializerInternalReader.EnsureType(JsonReader reader, Object value, CultureInfo culture, JsonContract contract, Type targetType)
   --- 内部异常堆栈跟踪的结尾 ---
   在 Newtonsoft.Json.Serialization.JsonSerializerInternalReader.EnsureType(JsonReader reader, Object value, CultureInfo culture, JsonContract contract, Type targetType)
   在 Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateValueInternal(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerMember, Object existingValue)
   在 Newtonsoft.Json.Serialization.JsonSerializerInternalReader.SetPropertyValue(JsonProperty property, JsonConverter propertyConverter, JsonContainerContract containerContract, JsonProperty containerProperty, JsonReader reader, Object target)
   在 Newtonsoft.Json.Serialization.JsonSerializerInternalReader.PopulateObject(Object newObject, JsonReader reader, JsonObjectContract contract, JsonProperty member, String id)
   在 Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateObject(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerMember, Object existingValue)
   在 Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateValueInternal(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerMember, Object existingValue)
   在 Newtonsoft.Json.Serialization.JsonSerializerInternalReader.PopulateList(IList list, JsonReader reader, JsonArrayContract contract, JsonProperty containerProperty, String id)
   在 Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateList(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, Object existingValue, String id)
   在 Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateValueInternal(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerMember, Object existingValue)
   在 Newtonsoft.Json.Serialization.JsonSerializerInternalReader.SetPropertyValue(JsonProperty property, JsonConverter propertyConverter, JsonContainerContract containerContract, JsonProperty containerProperty, JsonReader reader, Object target)
   在 Newtonsoft.Json.Serialization.JsonSerializerInternalReader.PopulateObject(Object newObject, JsonReader reader, JsonObjectContract contract, JsonProperty member, String id)
   在 Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateObject(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerMember, Object existingValue)
   在 Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateValueInternal(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerMember, Object existingValue)
   在 Newtonsoft.Json.Serialization.JsonSerializerInternalReader.Deserialize(JsonReader reader, Type objectType, Boolean checkAdditionalContent)
   在 Newtonsoft.Json.JsonSerializer.DeserializeInternal(JsonReader reader, Type objectType)
   在 Newtonsoft.Json.JsonConvert.DeserializeObject(String value, Type type, JsonSerializerSettings settings)
   在 Newtonsoft.Json.JsonConvert.DeserializeObject[T](String value, JsonSerializerSettings settings)
   在 Newtonsoft.Json.JsonConvert.DeserializeObject[T](String value)
   在 yfzWebApi.Utils.SerializeHelper.JsonDeserialize[T](String json)
[14:34:24] [Fatal] [yfzWebApi.BLL.NewOrderService] : 工单提交异常System.NullReferenceException: 未将对象引用设置到对象的实例。
   在 yfzWebApi.BLL.NewOrderService.SaveOrderNew(Object dy)