Not able to decode JSON

Getting error " Thread 1: Fatal error: Could not decode sanantoniotx.json from bundle."

Here is my code.

// MARK: - Welcome
struct Welcome: Codable {
    var status: String
    var urgentAdsHTML, data: [AdInfo]
}

// MARK: - AdInfo
struct AdInfo: Codable {
    var aid, bname, bcity: String?
    var bstate: Bstate?
    var distance: String?
    var cangap: String?
    var vip: Int?
    var photo: [String: String]?
    var adsTitle, adsMsg, status: String?
    var urgentAdsHTML: [AdInfo]?

    enum CodingKeys: String, CodingKey {
        case aid, bname, bcity, bstate, distance, cangap, vip, photo
        case adsTitle
        case adsMsg
        case status, urgentAdsHTML
    }
    static let allAds: [AdInfo] = Bundle.main.decode(file: "sanantoniotx.json")
        static let sampleAd: AdInfo = allAds[0]
}

enum Bstate: String, Codable {
    case tx = "TX"
}




extension Bundle {
    func decode<T: Decodable>(file: String) -> T {
        guard let url = self.url(forResource: file, withExtension: nil) else {
            fatalError("Could not find \(file) in bundle.")
        }
        
        guard let data = try? Data(contentsOf: url) else {
            fatalError("Could not load \(file) from bundle.")
        }
        
        let decoder = JSONDecoder()
        
        guard let loadedData = try? decoder.decode(T.self, from: data) else {
            fatalError("Could not decode \(file) from bundle.")
        }
        
        return loadedData
    }
}

receiving the error at.

            fatalError("Could not decode \(file) from bundle.")

Id be very thankful if anyone can help.