Http Nullable Values Using Flutter 2 Stack Overflow

Http Nullable Values Using Flutter 2 Stack Overflow From flutter 2 they provided nullable because of null value it show error. you need to define const default value or append the ? operator to specify that the variable is of a nullable type. The http.post method is not sending any variable back to the php script i checked it using isset () code: final list questions; final map answers; int correctanswers; quizfin({key key, @required this.questions, @required this.answers}): super(key: key); adddata(string score) async{.

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