FCM token retrieval working on Android but not iOS

Automatic FlutterFlow imports
import '/flutter_flow/flutter_flow_theme.dart';
import '/flutter_flow/flutter_flow_util.dart';
import '/custom_code/actions/index.dart'; // Imports other custom actions
import '/flutter_flow/custom_functions.dart'; // Imports custom functions
import 'package:flutter/material.dart';
// Begin custom action code
// DO NOT REMOVE OR MODIFY THE CODE ABOVE!

import 'package:firebase_messaging/firebase_messaging.dart';
import 'package:shared_preferences/shared_preferences.dart';

Future<String?> gettingFirebaseId() async {
  try {
    final prefs = await SharedPreferences.getInstance();
    FirebaseMessaging messaging = FirebaseMessaging.instance;

    // Request permission to receive notifications
    NotificationSettings settings = await messaging.requestPermission(
      alert: true,
      badge: true,
      sound: true,
    );

    switch (settings.authorizationStatus) {
      case AuthorizationStatus.authorized:
      case AuthorizationStatus.provisional:
        prefs.setBool('hasRequestedNotificationPermission', true);
        print('Notification Permission Granted');
        break;
      case AuthorizationStatus.denied:
        print('Notification Permission Denied');
        break;
      case AuthorizationStatus.notDetermined:
        print('Notification Permission Not Determined');
        break;
    }

    // Attempt to get the device token regardless of the permission status
    String? token = await messaging.getToken();
    if (token != null) {
      print('FCM Token: $token');
    } else {
      print('Failed to retrieve FCM Token');
    }
    return token;
  } catch (e) {
    print('Error getting FCM Token: $e');
    return "fcm_token_not_found";
  }
}