swift – Failure to load iOS core information database first time

In my iOS app, my database is within the folder of Utility assist/myDatabase folder. Hare are codes to get this folder created if not exist:

class MyDatabaseURLHelper {
  personal databaseBase: URL {
    let baseDir: FileManager.SearchPathDirectory = 
      .applicationSupportDirectory
    let subDir = "myDatabase"
    var url = FileManager.default.urls(
      for: baseDir,
      in: .userDomainMask).first!.appendPathComponent(subDir)
    return url
  }

  func databaseURL() -> URL? {
    var url: URL? = databaseBase
    let dbName = "MyDatabaseFile"
    if !FileManager.default.fileExists(atPath: url.path) { 
      do {
        strive FileManager.default.createDirectory(
          atPath: databaseBase.path, 
          withIntermediateDirectories: true, 
          attributes: nil)
      } catch {
        url = nil
    }
    return url?.appendPathComponent(dbName)
  }
}

I’ve examined above codes. The database sub folder is created if no exist(first time), and the database url seems to be positive.

Here’s a snip of my codes to load database:

let modelName = "MyDatabase"
let container = NSPersistentContainer(title: modelName)
let url = MyDatabaseURLHelper().databaseURL()!
let storeDesription = NSPersistentStoreDescription(url: url)
storeDesription.shouldInferMappingModelAutomatically = true
storeDesription.shouldMigrateStoreAutomatically = true
container.persistentStoreDescriptions = [storeDesription]
container.loadPersistentStores() {
  (storeDescription, error) in
    if let error = error as NSError? {
      let msg = "Unresolved error (error), (error.userInfo)"
      fatalError(msg) // <- I acquired exception right here! if database file doesn't exist first time.
    }
}
return container // No errors if database exists

My app runs OK for present customers since they’ve db file. Nonetheless, for brand new customers, I acquired my app crashes. New customers do not have database at their first time run. I verified the identical lead to my Xcode simulators.

The next is error message:

*"Unresolved error Error Area=NSCocoaErrorDomain Code=256 "The file “MyDatabase” couldn’t be opened." UserInfo={NSFilePath=/Customers/.../Utility/8DBC6D4F-967C-433D-9B28-60451CDAECDB/Library/Utility Help/myDatabase, "NSSQLiteErrorDomain": 14]"*   

Unsure what has been modified in latest iOS (15.4). What’s lacking in loading persistence retailer?