Mismatch Between Json data And Classes i've made - ios

Question

im really new to swift and without your help i cant move forward guys
can someone please tell me how can i fix this error?
i put the image of error below
import UIKit
import Alamofire
import SwiftyJSON
class AppCategory : NSObject {
var name : String?
var apps : [App]?
var type : String?
override func setValue(_ value: Any?, forKey key: String) {
if key == "apps " {
var apps = [App]()
for dict in value as! [[String:AnyObject]] {
let app = App()
app.setValuesForKeys(dict)
apps.append(app)
}
}else{
super.setValue(value, forKey: key)
}
}
static func fetchFeaturedApps (completionHandler : #escaping ([AppCategory]) -> ()) {
let urlRequest = URLRequest(url:URL(string: "http://www.statsallday.com/appstore/featured")!)
URLSession.shared.dataTask(with: urlRequest as URLRequest) { (data, response, error) -> Void in
if error != nil {
print(error!)
return
}
do {
let json = try( JSONSerialization.jsonObject(with: data!, options: .mutableContainers)) as! [String : Any]
var appCategories = [AppCategory]()
for dict in json["categories"] as! [[String:Any]]{
let appcategory = AppCategory()
appcategory.setValuesForKeys(dict)
appCategories.append(appcategory)
}
DispatchQueue.main.async {
completionHandler(appCategories)
}
}catch let err {
print(err)
}
}.resume()
}
here is my class
class App : NSObject {
var Id : NSNumber?
var Name : String?
var ImageName : String?
var Category : String?
var Price : NSNumber?
}
the JSON link
this is a fuction that should pass back cell but gives me the mismatching on NSArray error
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: cellId, for: indexPath) as! AppCell
cell.apps = appCategory?.apps?[indexPath.item]
return cell
}
i dont know how to findout which types are not match

Answer 1

for the second error
check this line if key == "apps " { remove space in word apps
you should use this
for dict in json["categories"] as! [[String:Any]]{
}
// Any is an alias for any data type.
// AnyObject is an alias for any data type derived from a class.
but better to write it
guard let categories = json["categories"] as? [[String:Any]] else {
return
}
for dict in categories {
}