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My Preview Canvas does not work anymore. I already uninstalled and freshly reinstalled Xcode (App Store Version and direct download from developer.apple.com, version 13.2 with Big Sur and now updated to Monterey 12.1). I uninstalled Xcode using AppCleaner and also by clearing the clang/cache folders, as well as Lib/Dev... etc. manually, but the same error comes up over and over again. When I run the code directly (via Run/Simulator instead of Preview/Canvas) the app shows up and works just fine. I open Xcode, I create a new project for iOS, I resume the preview and it fails with the attached error... Preview Canvas Diagnostics Any help would be greatly appreciated as at the moment, I don't have a running development environment unfortunately... Thanks in advance. Best regards Silvio

I have this JSON-File coming from a MySQL-Database via PHP: [ { "id":1, "partner":{ "id":1, "name":"Migros Bank", "image":"migrosbank" }, "name":"Testkonto 1", "type":"bank", "iban":"CH12 1234 1234 1234 1234 1", "datapoints":[ { "id":1, "depot_id":1, "date":"2021-12-28", "amount":5811.490234375 }, { "id":2, "depot_id":1, "date":"2021-12-29", "amount":7736.89013671875 } ] }, { "id":2, "partner":{ "id":1, "name":"Migros Bank", "image":"migrosbank" }, "name":"Testkonto 2", "type":"bank", "iban":"CH12 1234 1234 1234 1234 2", "datapoints":[ { "id":3, "depot_id":2, "date":"2021-12-28", "amount":500 }, { "id":4, "depot_id":2, "date":"2021-12-29", "amount":1500 } ] } ] In SwiftUI I try to decode it to a custom struct called Depot which consists of one instance of the custom struct Partner and an array of Instances of the custom struct Depotstand: import Foundation import SwiftUI struct Partner: Hashable, Codable, Identifiable { var id: Int var name: String var image: String var imageName: Image { Image(image) } } struct Depotstand: Hashable, Codable, Identifiable { var id: Int var depot_id: Int var date: Date var amount: Double } struct Depot: Hashable, Codable, Identifiable { var id: Int var partner: Partner var name: String var type: String var iban: String var datapoints: [Depotstand] } I've added a data-model, to get the JSON-data from my webserver - this part works fine - and then I try to decode the data to the custom struct Depot, which fails (it works, if I simplify the JSON/struct to only the simple Depot struct without depending on Partner and Depotstand instances): import Foundation final class ModelDataDepot: ObservableObject { @Published var depots = [Depot]() init(){ let url = URL(string: "https://api.webcoders.ch/index.php")! URLSession.shared.dataTask(with: url) { (data, response, error) in do { if let data = data { let decodedData = try JSONDecoder().decode([Depot].self, from: data) DispatchQueue.main.async { self.depots = decodedData } } else { print("No Data!") } } catch { print("JSON-Error: \(error)") } }.resume() } } Here is the error I get which contains mainly data-type errors, but I have no idea to get around this: JSON-Error: typeMismatch(Swift.Double, Swift.DecodingError.Context(codingPath: [_JSONKey(stringValue: "Index 0", intValue: 0), CodingKeys(stringValue: "datapoints", intValue: nil), _JSONKey(stringValue: "Index 0", intValue: 0), CodingKeys(stringValue: "date", intValue: nil)], debugDescription: "Expected to decode Double but found a string/data instead.", underlyingError: nil)) I've already tried some different data-casting, even using Numberformatters etc. but I can't get it to work... Thanks for helping me out! P.s: I am an absolute beginner to SwiftUI and mobile development in general... My coding background is mainly PHP, PowerShell and such, so please be patient with me. :-)