Cannot decode library songs response for a non-Apple Music item

Hi there!

I am fetching library songs using the endpoint: https://api.music.apple.com/v1/me/library/songs

Here's the code snippet -

struct Songs: Decodable {
  let data: [Song]
}
 
public func librarySongs() async throws {
  let url = URL(string: "https://api.music.apple.com/v1/me/library/songs")
 
  guard let url = url else { return }
 
  let dataRequest = MusicDataRequest(urlRequest: URLRequest(url: url))
 
  do {
    let dataResponse = try await dataRequest.response()
    print(dataResponse.debugDescription)
 
    let response = try JSONDecoder().decode(Songs.self, from: dataResponse.data)
  } catch {
    print("**ERROR**")
    print(error)
    print(error.localizedDescription)
    }
}

Trying to decode it using a custom struct gives me the following error. -

**ERROR**
 
keyNotFound(CodingKeys(stringValue: "artistName", intValue: nil), Swift.DecodingError.Context(codingPath: [CodingKeys(stringValue: "data", intValue: nil), _JSONKey(stringValue: "Index 20", intValue: 20), CodingKeys(stringValue: "attributes", intValue: nil)], debugDescription: "No value associated with key CodingKeys(stringValue: \"artistName\", intValue: nil) (\"artistName\").", underlyingError: nil))
 
The data couldn’t be read because it is missing.

On digging through the response, I found that one of the songs doesn't have an artist name because it is just a recording of my song I added to the library through GarageBand.

In this case, what should be the approach?