I use flutter and firebase. I'm trying to receive notification by using functions, but i got the follow error : I/flutter ( 3555): DEBUG: Error sending notification: [firebase_functions/unauthenticated] The function must be called while authenticated. See my index.js :

// Import Firebase Functions V2 and Firebase Admin SDK
const { onDocumentCreated } = require('firebase-functions/v2/firestore');
const { https } = require('firebase-functions/v2');
const { setGlobalOptions } = require('firebase-functions/v2');
const admin = require('firebase-admin');

// Initialize Firebase Admin SDK with explicit credential
// This ensures proper initialization even in local development
if (!admin.apps.length) {
  admin.initializeApp({
    credential: admin.credential.applicationDefault()
  });
}

// Set global options
setGlobalOptions({
  region: "europe-west2",
  maxInstances: 10
});

exports.sendChallengeNotification = https.onCall(async (data, context) => {
  // Validate authentication
  if (!context || !context.auth || !context.auth.uid) {
    throw new https.HttpsError(
      'unauthenticated',
      'The function must be called while authenticated.'
    );
  }
    print("adversaryToken: $adversaryToken");
    print("title: $title");
    print("body: $body");

  // Validate required parameters
  const { adversaryToken, title, body } = data;
  if (!adversaryToken || !title || !body) {
    throw new https.HttpsError(
      'invalid-argument',
      'Missing required parameters: adversaryToken, title, or body'
    );
  }

  try {
    // Get sender's information
    const senderDoc = await admin.firestore()
      .collection('users')
      .doc(context.auth.uid)
      .get();

    if (!senderDoc.exists) {
      throw new https.HttpsError('not-found', 'Sender profile not found');
    }

    const senderData = senderDoc.data();

    const message = {
      notification: {
        title: title,
        body: body,
      },
      data: {
        senderUid: context.auth.uid,
        senderName: senderData.name || 'Unknown User',
        type: 'challenge',
        timestamp: Date.now().toString()
      },
      token: adversaryToken,
      android: {
        priority: 'high',
        notification: {
          clickAction: 'FLUTTER_NOTIFICATION_CLICK'
        }
      },
      apns: {
        payload: {
          aps: {
            sound: 'default'
          }
        }
      }
    };

    const response = await admin.messaging().send(message);

    // Log the successful notification
    await admin.firestore().collection('notifications').add({
      sender: context.auth.uid,
      token: adversaryToken,
      title: title,
      body: body,
      timestamp: admin.firestore.FieldValue.serverTimestamp(),
      status: 'sent',
      messageId: response
    });

    return {
      success: true,
      messageId: response,
      timestamp: Date.now()
    };
  } catch (error) {
    console.error('Error in sendChallengeNotification:', error);

    // Log the failed notification
    await admin.firestore().collection('notifications').add({
      sender: context.auth.uid,
      token: adversaryToken,
      title: title,
      body: body,
      timestamp: admin.firestore.FieldValue.serverTimestamp(),
      status: 'failed',
      error: error.message
    });

    throw new https.HttpsError(
      'internal',
      'Failed to send notification',
      error.message
    );
  }
});

See my flutter function :

  Future<void> sendNotificationToAdversary(String adversaryUserID, String title, String body) async {
    try {
      print("DEBUG: Received parameters - adversaryUserID: $adversaryUserID, title: $title, body: $body");

      if (adversaryUserID.isEmpty) {
        print("DEBUG: AdversaryUserID is empty. Exiting.");
        return;
      }

      // Ensure Firebase is initialized
      if (Firebase.apps.isEmpty) {
        await Firebase.initializeApp();
      }

      // Check authentication
      User? currentUser = FirebaseAuth.instance.currentUser;
      if (currentUser == null) {
        print("DEBUG: User is not authenticated.");
        throw FirebaseAuthException(code: 'unauthenticated', message: 'Please log in.');
      }
      print("DEBUG: Authenticated user ID: ${currentUser.uid}");

      // Retrieve adversary FCM token
      DocumentSnapshot userDoc = await FirebaseFirestore.instance.collection('users').doc(adversaryUserID).get();
      if (!userDoc.exists) {
        print("DEBUG: No user found with ID: $adversaryUserID.");
        return;
      }

      String? adversaryToken = userDoc.get('fcmToken') as String?;
      if (adversaryToken == null || adversaryToken.isEmpty) {
        print("DEBUG: FCM token missing for adversary.");
        return;
      }
      print("DEBUG: Retrieved FCM token: $adversaryToken");

      // Initialize Cloud Functions
      FirebaseFunctions functions = FirebaseFunctions.instanceFor(region: 'europe-west2');
      print("DEBUG: Initialized Cloud Functions.");

      if (title.isEmpty) {
        throw Exception('Notification title is required');
      }
      if (body.isEmpty) {
        throw Exception('Notification body is required');
      }


      // Call the Cloud Function with the adversary's token, title, and body
      HttpsCallable callable = functions.httpsCallable('sendChallengeNotification');
      final response = await callable.call({
        'adversaryToken': adversaryToken,
        'title': title,
        'body': body,
      });

      print("DEBUG: Notification sent successfully. Response: $response");
    } catch (e) {
      print("DEBUG: Error sending notification: $e");
      if (e is FirebaseException) {
        print("DEBUG: Firebase Error Code: ${e.code}");
        print("DEBUG: Firebase Error Message: ${e.message}");
      }
    }
  }

-d '{ "name": "Hello World" }'me@cloudshell:~ (ratemyproject-68373)$ curl -X POST \

-H "Authorization: bearer $(gcloud auth print-identity-token)"
-H "Content-Type: application/json"
-d '{ "name": "Hello World" }' {"error":{"message":"Bad Request","status":"INVALID_ARGUMENT"}}me@cloudshell:~ (ratemyproject-68373)$

In Google Cloud, i already gave the autorisations to allUsers. Any idea? Thanks for advance, for you time.

Edit : @Frank van Puffelen thanks for your answer. Like i wrote it, i already put the good rights and i showed my firebase tools cli login, that show an error. Thanks