Flutter : Error NoSuchMethodError, I don't understand why?

Question

answerControllers = new Map<String, dynamic>(); List<dynamic> answersToQuestion = getAnswersOfQuestion(answers, question["id"]); if (!answerControllers.containsKey(question["id"])) { answerControllers[question["id"]] = new Map<dynamic, dynamic>(); if (previousValue == null) { for (dynamic answer in answersToQuestion){ answerControllers[question["id"]][answer["libelle"]]['checked'] = false; }

And I got this error :

The following NoSuchMethodError was thrown building CreateDemandView(dirty, state: _CreateDemandViewState#d56fe): The method '[]=' was called on null. Receiver: null Tried calling: []=("checked", false)

try mapping directly to the class and see if you get a problem — ListenSoftware Louise Ai Agent
– ListenSoftware Louise Ai Agent, Commented Mar 16, 2022 at 19:58

Mee Mihoyo · Accepted Answer · 2022-03-16 16:58:00Z

1

make sure in question["id"] there is a value

answered Mar 16, 2022 at 16:58

Mee Mihoyo

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