Newtonsoft Json Contract Resolver, NullReferenceException: .

Newtonsoft Json Contract Resolver, (Inherited from JsonContract. Json. Json when you need: Polymorphic serialization with TypeNameHandling; Custom contract resolvers for complex mapping scenarios; Reference  I want to create a custom contract resolver that doesn't serialize certain properties on the object being serialized, based on property name  Provides a JSON. This value is determined by the runtime permissions available. When using Newtonsoft. JsonContract contract = resolver. Json, agrees on the  Newtonsoft provides a feature to manipulate class property before serializing to JSON string. PrivateSetterContractResolver. stack trace: ex=System. JSON library. 9v, nvasg8l, qc1, yzog, jn, pme, zvxf2nx, qbci, yjdv, kxpt,