Hello, I have created a documentspicker to select a PDF file and then upload it to storage, but I am getting this error only on my device; it works correctly on the simulator. This is my code: @Binding var alertShow:Bool var detailpet:String = "" func makeCoordinator() -> Coordinator { return DocumentPicker.Coordinator(parent1: self) } func makeUIViewController(context: UIViewControllerRepresentableContext<DocumentPicker>) -> UIDocumentPickerViewController { let picker = UIDocumentPickerViewController(forOpeningContentTypes: [.pdf]) picker.allowsMultipleSelection = false picker.delegate = context.coordinator return picker } func updateUIViewController(_ uiViewController: UIDocumentPickerViewController, context: UIViewControllerRepresentableContext<DocumentPicker>) { } class Coordinator : NSObject, UIDocumentPickerDelegate { var parent:DocumentPicker init(parent1: DocumentPicker){ parent = parent1 } func documentPicker(_ controller: UIDocumentPickerViewController, didPickDocumentsAt urls:[URL]) { let bucket = Storage.storage().reference() let db = Firestore.firestore() let collection = "documents" guard let url = urls.first, url.startAccessingSecurityScopedResource() else { return } DispatchQueue.main.async { url.stopAccessingSecurityScopedResource() print("Documents Picker stop") } let referenceDocument = bucket.child("docu/\(url.deletingPathExtension().lastPathComponent)") let _ = referenceDocument.putFile(from:url, metadata: nil) { metadata , error in guard metadata != nil else{ print("Error \(String(describing: error?.localizedDescription))") return } referenceDocument.downloadURL { url, error in guard let url = url else { print("Message error \(String(describing: error?.localizedDescription))") return } let _ = try? db.collection(collection).addDocument(from:DocumentData(idpet:self.parent.detailpet, name: "\(url.deletingPathExtension().lastPathComponent).pdf", url: url.absoluteString)) } print("Succes") self.parent.alertShow.toggle() } } } } t seems to be a permissions issue, I believe. Do you know how I can fix this? It's my first application. Thank you.