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I can't handle data on firebase firestore with flutter. (add data, delete data, update data, read data etc.)

import 'package:cloud_firestore/cloud_firestore.dart'; import 'package:flutter/material.dart'; class TeacherTable extends StatelessWidget { TeacherTable({Key? key}) : super(key: key); FirebaseFirestore _firestore = FirebaseFirestore.instance; @override Widget build(BuildContext context) { return Scaffold( body: Center( child: Column( children: [ ElevatedButton( onPressed: () => addData, child: const Text('Add data…

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Firebase – Flutter: type 'List<dynamic>' is not a subtype of type 'Map<String, dynamic>' in type cast

Im trying to make a list ti json for firestore, and have the following code: static Map<String, dynamic> toJson(Message? message) => { 'id': message?.id, 'senderId': message?.senderId, 'receiverId': message?.receiverId, 'message': message?.message, 'dateTime': message?.dateTime, 'timeString': message?.timeString, 'likes': message?.likes, 'chatId': message?.chatId, 'commentCount': message?.commentCount,…

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