I've been struggling with this for a few days, and hoping someone can point me in the right direction. I'm using a Document Picker to import a .json file into my app from the Files Directory. On the simulator everything works great, but when testing on a device I keep running into NSURLErrorDomain Code=-1100 "The requested URL was not found on this server." (I've also tried the alternate approach of using .fileImporter, only to get the exact same results.) I'm probably missing a permission or something? I can't seem to find the right answer online. I do have Supports opening documents in place & Application supports iTunes file sharing in the plist. Any suggestions would be appreciated. Here's my code that's mostly cobbled together from tutorials, forums, and anywhere else I could find. import SwiftUI import Foundation import MobileCoreServices import UniformTypeIdentifiers struct DocumentPicker: UIViewControllerRepresentable {     func makeCoordinator() -> DocumentPicker.Coordinator {         return DocumentPicker.Coordinator(parent1: self)     } // Document Picker Setup func makeUIViewController(context: UIViewControllerRepresentableContext<DocumentPicker>) -> UIDocumentPickerViewController {     let supportedTypes: [UTType] = [UTType.json]     let picker = UIDocumentPickerViewController(forOpeningContentTypes: supportedTypes)         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 } // getting the url for .json     func documentPicker(_ controller: UIDocumentPickerViewController, didPickDocumentsAt urls: [URL]) {         guard let archiveurl = urls.first else {             return         }         URLSession.shared.dataTask(with: archiveurl) { data, response, error in                 if let data = data {                     let jsonDecoder = JSONDecoder()                     if let JSONdecoded = try? jsonDecoder.decode(Jproject.self, from: data) { // using the parsed .json data to populate app info..                         self.parseJproject(parsedJSON: JSONdecoded)                     }                     return                 }             }.resume()         }