Error stack trace
![Error stack trace. System.nullreferenceexception: "object reference not set to an instance of an object.". nullreferenceexception: object reference not set to an instance of an object. object reference not set to an instance of an object [system.nullreferenceexception] details: no details. domain_error throw exception.](https://i.stack.imgur.com/uGybr.png "System.nullreferenceexception: "object reference not set to an instance of an object.". nullreferenceexception: object reference not set to an instance of an object. object reference not set to an instance of an object [system.nullreferenceexception] details: no details. domain_error throw exception.")
![Error stack trace. Коды ошибок сервера. server error. for input string: "шт" ошибка.](https://i.stack.imgur.com/lOHlt.jpg "Коды ошибок сервера. server error. for input string: "шт" ошибка.")
![Error stack trace. 500 статус. ошибка сервера java.. стек-трейс java. {"status":500,"message":"server error. check your request, api documentation or contact to support"}.](https://resources.infosecinstitute.com/wp-content/uploads/2020/10/image2-38.png "500 статус. ошибка сервера java.. стек-трейс java. {"status":500,"message":"server error. check your request, api documentation or contact to support"}.")
