Error is shown when subscription object is null which is the required type parameter.

Error: NoSuchMethodError: The method '[]' was called on null. Receiver: null Tried calling:

How to solve this error, arrived on when subscription object is null.

I also shared my model class download link https://drive.google.com/file/d/1gcOKQ49RaEF3w0NBPpijGtbGUdSkgZrx/view?usp=sharing

CodePudding user response：

please try with this

if(json['subscription'] !=null) { subscription = Subscription.fromJson(json['subscription']); }