Serialization fails: type 'String' is not a subtype of type 'int' in type cast · Issue #503 · google/json_serializable.dart · GitHub
![dart - Error: The argument type 'String?' can't be assigned to the parameter type 'String' because 'String?' is nullable and 'String' isn't - Stack Overflow dart - Error: The argument type 'String?' can't be assigned to the parameter type 'String' because 'String?' is nullable and 'String' isn't - Stack Overflow](https://i.stack.imgur.com/rEwQ3.png)
dart - Error: The argument type 'String?' can't be assigned to the parameter type 'String' because 'String?' is nullable and 'String' isn't - Stack Overflow
![flutter - If everything in Dart is an Object then why passing String and Integers variable and modifying it inside function will not change the value of object - Stack Overflow flutter - If everything in Dart is an Object then why passing String and Integers variable and modifying it inside function will not change the value of object - Stack Overflow](https://i.stack.imgur.com/pWgt0.png)