firebase-ios-sdk: Cannot upload file to Storage. uploadTask.putFile callback is not called

[REQUIRED] Step 2: Describe your environment

• Xcode version: 10
• Firebase SDK version: Newest from Git
• Firebase Component: Storage (Auth, Core, Database, Firestore, Messaging, Storage, etc)
• Component version: Newest from branch master

[REQUIRED] Step 3: Describe the problem

I’m developing uploading screenshot to Storage for macOS application. I used these code below, it does not throw any error or crash. I don’t see any new file on Storage after upload and callback at putFile won’t be called.

Steps to reproduce:

        let storage = Storage.storage()
        let localFile = URL(string: "/Users/truonghieu/Library/Containers/com.example.appname/Data/Documents/appname/image.jpg")
        let storageRef = storage.reference().child("abc.jpg")
        let uploadTask = storageRef.putFile(from: localFile!, metadata: nil) { metadata, error in
            guard metadata != nil else{
                print("error: \(String(describing: error?.localizedDescription))")
                return
            }
            let fileManager = FileManager.default
            if fileManager.fileExists(atPath: localPath) {
                do {
                    try fileManager.removeItem(at: localFile!)
                    print("success: move item\(localPath)")
                }catch{
                    print("failed: move item\(localPath)")
                }
            }
        }