The following TypeErrorImpl was thrown building GameScreen - dart

Question

I got this error on terminal
══╡ EXCEPTION CAUGHT BY WIDGETS LIBRARY
╞═══════════════════════════════════════════════════════════ The
following TypeErrorImpl was thrown building GameScreen(dirty,
dependencies: [_InheritedProviderScope<RoomDataProvider?>], state:
_GameScreenState#df23f): type 'Null' is not a 'bool' in boolean expression The relevant error-causing widget was: GameScreen
This is my code:
import 'package:flutter/material.dart';
import 'package:game/provider/room_data_provider.dart';
import 'package:game/resources/socket_method.dart';
import 'package:provider/provider.dart';
import '../viiews/waiting_lobby.dart';
class GameScreen extends StatefulWidget {
static String routeName = '/game';
const GameScreen({Key? key}) : super(key: key);
#override
State<GameScreen> createState() => _GameScreenState();
}
class _GameScreenState extends State<GameScreen> {
final SocketMethods _socketMethods = SocketMethods();
#override
void initState() {
super.initState();
_socketMethods.updateRoomListener(context);
_socketMethods.updatePlayerStateListener(context);
// _socketMethods.pointIncreaseListener(context);
// _socketMethods.endGameListener(context);
}
#override
Widget build(BuildContext context) {
RoomDataProvider roomDataProvider = Provider.of<RoomDataProvider>(context);
return Scaffold(
body: roomDataProvider.roomData['isJoin']
? const WaitingLobby()
: SafeArea(
child: Column(
mainAxisAlignment: MainAxisAlignment.start,
children: [
// const Scoreboard(),
// const TicTacToeBoard(),
Text(
'${roomDataProvider.roomData['turn']['nickname']}\'s turn'),
],
),
),
);
}
}
room_data_provider.dart
import 'package:flutter/material.dart';
import 'package:game/models/player.dart';
class RoomDataProvider extends ChangeNotifier {
Map<String, dynamic> _roomData = {};
Player _player1 =
Player(nickname: "", socketID: "", points: 0, playerType: "X");
Player _player2 =
Player(nickname: "", socketID: "", points: 0, playerType: "O");
Map<String, dynamic> get roomData => _roomData;
Player get player1 => _player1;
Player get player2 => _player2;
void updateRoomData(Map<String, dynamic> data) {
_roomData = data;
notifyListeners();
}
void updatePlayer1(Map<String, dynamic> player1Data) {
_player1 = Player.fromMap(player1Data);
notifyListeners();
}
void updatePlayer2(Map<String, dynamic> player2Data) {
_player2 = Player.fromMap(player2Data);
notifyListeners();
}
}
index.js
socket.on("joinRoom", async ({ nickname, roomId }) => {
try {
if (!roomId.match(/^[0-9a-fA-F]{24}$/)) {
socket.emit("errorOccurred", "Please enter a valid room ID.");
return;
}
let room = await Room.findById(roomId);
if (room.isJoin) {
let player = {
nickname,
socketID: socket.id,
playerType: "O",
};
socket.join(roomId);
room.players.push(player);
room.isJoin = false;
room = await room.save();
io.to(roomId).emit("joinRoomSuccess", room);
io.to(roomId).emit("updatePlayers", room.players);
io.to(roomId).emit("updateRoom", room);
} else {
socket.emit(
"errorOccurred",
"The game is in progress, try again later."
);
}
} catch (e) {
console.log(e);
}
});
How can I solve this issue ?
Thanks for any help you can provide