Swift : Thread 10: Fatal error: unableToParse - swift

Question

I've been using NewsApi . and it works perfectly but all of a sudden I got this error :
Thread 10: Fatal error: unableToParse
is anyone familiar with this error
my view controller :
class HomeViewController: UIViewController , UITableViewDelegate, UITableViewDataSource ,UIScrollViewDelegate , UITabBarDelegate {
var ref: DatabaseReference!
var i: Int = 0
#IBOutlet weak var bookMark: UITabBarItem!
// outlets
#IBOutlet weak var tableView: UITableView!
var articles = [NewsArticle]() {
didSet {
DispatchQueue.main.async {
self.tableView.reloadData()
}
}
}
let newsAPI = NewsAPI(apiKey: "//////////")
private let imageView = UIImageView(image: UIImage(named: "logo"))
//// table View
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return 10
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
if (indexPath.row == 0)
{
let cell = Bundle.main.loadNibNamed("FeaturesTableViewCell", owner: self, options: nil)?.first as! FeaturesTableViewCell
return cell
}
else if (indexPath.row == 1)
{
var breakingNews : String = ""
let cell = Bundle.main.loadNibNamed("BreakingNewsViewCell", owner: self, options: nil)?.first as! BreakingNewsViewCell
for article in articles
{
breakingNews = breakingNews+" - "+article.title
}
cell.newsLabel.text = breakingNews
return cell
}
else{
let cell = Bundle.main.loadNibNamed("NewViewCellTableViewCell", owner: self, options: nil)?.first as! NewViewCellTableViewCell
cell.titleLabel.text = "NEWS"
return cell
}
}
override func viewDidLoad() {
navigationItem.hidesBackButton = true
newsAPI.getTopHeadlines(q:"a"){ result in
switch result {
case .success(let articles):
self.articles = articles
case .failure(let error):
fatalError("\(error)")
}
}
tableView.delegate = self
tableView.dataSource = self
// setupMenuBar()
}
}
and i got that error marked in :
case .failure(let error):
but it used work perfectly
NewsApi Class:
public typealias NewsAPIRequestHandler<T> = ((Result<[T], NewsAPIError>) -> ())
public class NewsAPI {
private let provider: NewsProvider
private let decoder: NewsAPIDecoder
public init(apiKey: String) {
self.provider = NewsProvider(apiKey: apiKey)
self.decoder = NewsAPIDecoder()
}
init(provider: NewsProvider, sourceDecoder: NewsAPIDecoder) {
self.provider = provider
self.decoder = sourceDecoder
}
#discardableResult
public func getSources(category: NewsCategory = .all, language: NewsLanguage = .all, country: NewsCountry = .all, completion: #escaping NewsAPIRequestHandler<NewsSource>) -> URLSessionDataTask? {
let targetAPI = NewsAPITarget.sources(category: category, language: language, country: country)
return request(targetAPI, completion: completion)
}
#discardableResult
public func getTopHeadlines(q: String? = nil,
sources: [String]? = nil,
category: NewsCategory = .all,
language: NewsLanguage = .all,
country: NewsCountry = .all,
pageSize: Int? = nil,
page: Int? = nil,
completion: #escaping NewsAPIRequestHandler<NewsArticle>) -> URLSessionDataTask? {
let targetAPI = NewsAPITarget.topHeadlines(q: q, sources: sources, category: category, language: language, country: country, pageSize: pageSize, page: page)
return request(targetAPI, completion: completion)
}
}
private extension NewsAPI {
func request<T: Decodable>(_ target: NewsAPITarget, completion: #escaping NewsAPIRequestHandler<T>) -> URLSessionDataTask? {
return provider.request(target) { data, error in
guard let data = data else {
completion(.failure(error ?? .unknown))
return
}
do {
let result: [T] = try self.decoder.decode(data: data)
completion(.success(result))
} catch let error {
let newsAPIError = (error as? NewsAPIError) ?? .unknown
completion(.failure(newsAPIError))
}
}
}
}
and as for newsAPIError class it has :
public enum NewsAPIError: Error {
case unknown
case unableToParse
case requestFailed
case invalidEndpointUrl
case serviceError(code: String, message: String)
}
please any help is welcome and thank you