Bundle.main.url/path cannot locate audio file.

Hii,

I wanted to use some audio files for my project that I'm building for Swift Student Challenge. But when I'm trying to locate the audio file I get an error or crash because the playground cannot locate or find the path to that audio file. I'm using Xcode app playground project.

My code :

func playSound(soundName:String){

    if let url = Bundle.main.url(forResource: "CFile", withExtension: "mp3"){
        do {
            self.audioPlayer = try AVAudioPlayer(contentsOf: url)
            self.audioPlayer?.prepareToPlay()
            self.audioPlayer?.play()
        }catch {
            print("Error : \(error)")
        }
    }
    else{
        print("ERROR")
    }
    //        let url = Bundle.main.url(forResource: "C", withExtension: "wav")
    //        audioPlayer = try! AVAudioPlayer(contentsOf: url!)
    //        self.audioPlayer.play()
}

}

If anyone has a solution please help me to fix this thing because sound is an important part of my project.

Thank you!!!