ios – How to upload a image and video to firebase

I am trying to upload a image and a video to firebase but they are uploading together I want to upload them separately so when I fetch my user post from firebase they don’t display together like this the videoUrl is added to imageurl but I want to upload them separately .

How do I set up my code to upload my image and videoUrl to firebase without receiving any errors

I have tried using different methods but I ran into some errors

Cannot convert value of type ‘PhotosPickerItem’ to expected argument type ‘String’

var videoUrl: String? = nil

if let vidUrl = selectedImage{
    guard let url = URL(string: vidUrl) else { return }
    let videosUrl = try await VideoUploader.uploadVideoToStorage(withUrl: url)
}

And I also tried this method also and it gave me a error as well

Thread 1: Fatal error: Unexpectedly found nil while unwrapping an Optional value

var videoUrl: String? = nil
   
if let url = URL(string: videoUrl!) {
    let videoUrl = try await VideoUploader.uploadVideoToStorage(withUrl: url)
}

class UploadViewModel: NSObject, ObservableObject {
    @Published var error: Error?
    @Published var videos = [Video]()
    @Published var selectedVideoUrl: URL?
    @Published var selectedImage: PhotosPickerItem? {
        didSet {
            
            Task { try await uploadVideo() }
        }
    }
    
    private var uiImage: UIImage?
    private var videoData: Data?
    func uploadPost() async throws {
        guard let uid = Auth.auth().currentUser?.uid else { return }
        
         var videoUrl: String? = nil
       
        if let url = URL(string: videoUrl!) {
            let videoUrl = try await VideoUploader.uploadVideoToStorage(withUrl: url)
        }