Error: @AppStorage No exact matches in call to initializer

Hello together,

i do have the following struct:

struct Ballpark: Identifiable, Codable, Comparable, Hashable {
    @DocumentID var id: String? = UUID().uuidString  // -> UUID of firestore document
    var name: String
    var street: String
    var nr: Int?
    var ext: String?
    var city: String
    var zip: Int?
    var googleMaps: String
    var category: String?
    var location: GeoPoint? //= Coordinate(latitude: 0.0, longitude: 0.0)
    var imageUrl: String?
    enum CodingKeys: String, CodingKey {
        case id
        case name
        case street
        case nr
        case city
        case zip
        case googleMaps = "google"
        case category
        case location = "geopoint"
        case imageUrl
    static func < (lhs: Ballpark, rhs: Ballpark) -> Bool {
        return == .orderedAscending

and I want to declare an @AppStorage var of type Ballpark, but I do get the error-message: “No exact matches in call to initializer”

@AppStorage("homeBallpark") var homeBallpark = Ballpark(id: nil, name: "", street: "", nr: nil, ext: nil, city: "", zip: nil, googleMaps: "", category: nil, location: GeoPoint(latitude: 0.0, longitude: 0.0), imageUrl: "")

I tried to initialize the ballpark var as an workaraound. In principal I want to declare the @AppStorage var as an optional

@AppStorage("homeBallpark") var homeBallpark: Ballpark?

GeoPoint is a class from FirebaseFireStore framework.
What am I doing wrong ?

Thanks and best regards