Not able to upload file to firebase storage in Flutter - flutter

Question

i'm trying to do the upload of image files to the cloud firestore in firebase using flutter. i'm always getting the following error and I do not understand where the issue is.
FirebaseException ([firebase_storage/object-not-found] No object exists at the desired reference.)
console:
E/StorageException(10183): StorageException has occurred.
E/StorageException(10183): Object does not exist at location.
E/StorageException(10183): Code: -13010 HttpResult: 404
Here is my code:
class DatabaseMethods {
CollectionReference cartesPro =
FirebaseFirestore.instance.collection('cartesPro');
FirebaseStorage storage = FirebaseStorage.instance;
Future<String> uploadFile(file) async {
Reference reference = storage.ref().child('cartesPro/');
print('REFERENCE: ${reference}');
UploadTask uploadTask = reference.putFile(file);
print('UPLOAD TASK${uploadTask.snapshot}');
TaskSnapshot taskSnapshot = await uploadTask;
return await taskSnapshot.ref.getDownloadURL();
}
void addFile(CartPro cartPro) {
cartesPro.add({
"cartUserId": cartPro.cartUserId,
"cartTimestamp": FieldValue.serverTimestamp()
});
}
}
Log of reference and uploadTask snapshot:
I/flutter (10183): REFERENCE: Reference(app: [DEFAULT], fullPath: cartesPro)
I/flutter (10183): UPLOAD TASK: TaskSnapshot(ref: Reference(app: [DEFAULT], fullPath: cartesPro), state: TaskState.running)
Everything seems pretty fine to me but still I do always get that error!
I'd be grateful for any kind of help!

Answer 1

First, make sure your firebase storage rules are correct.
Example:
rules_version = '2';
service firebase.storage {
match /b/{bucket}/o {
match /{allPaths=**} {
allow read, write;
}
}
}
Second, try pushing the data that comes as File as Uint8List.
Example:
Future<String> uploadFile(File file, String uid) async {
Reference reference = storage.ref().child('cartesPro/').child(uid); //It's helpful to name your file uniquely
Uint8List bytes = file.readAsBytesSync(); //THIS LINE
var snapshot = await reference.putData(bytes); //THIS LINE
return await snapshot.ref.getDownloadURL();
}