Uncaught Mrcnpdlk\Lib\ModelMapException: JSON property "Wojewodztwo"

[patrys666]

Today I got this error:
PHP Fatal error: Uncaught Mrcnpdlk\Lib\ModelMapException: JSON property "Wojewodztwo" in class "Mrcnpdlk\Api\Regon\Sdk\CompanyModel" must not be NULL in vendor/mrcnpdlk/lib-mapper/src/Mapper.php:101 Stack trace: #0 vendor/mrcnpdlk/regon-api/src/Api.php(229): Mrcnpdlk\Lib\Mapper->jsonMapArray('Mrcnpdlk\\Api\\Re...', Array) #1 /ajax/index.php(17): Mrcnpdlk\Api\Regon\Api->searchByNip('5552093597') #2 {main} thrown in /ajax/vendor/mrcnpdlk/lib-mapper/src/Mapper.php on line 101