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UIPrintInteractionController crashed when I use it to print a html content. Fatal Exception: NSInternalInconsistencyException UITableView dataSource returned a nil cell for row at index path: <NSIndexPath: 0x938e90f84baaa518> {length = 2, path = 1 - 0}. Table view: <UITableView: 0x107991000; frame = (0 0; 375 419); clipsToBounds = YES; gestureRecognizers = <NSArray: 0x2846b0000>; backgroundColor = <UIDynamicSystemColor: 0x281d2e400; name = systemGroupedBackgroundColor>; layer = <CALayer: 0x2848aa480>; contentOffset: {0, -56}; contentSize: {375, 357.0830078125}; adjustedContentInset: {56, 0, 0, 0}; dataSource: <UIPrintOptionsTableViewController: 0x107973800>>, dataSource: <UIPrintOptionsTableViewController: 0x107973800> here is the code private let webView = WKWebView() private let printController = UIPrintInteractionController.shared func showPrintView(encodedHtml: String) { printController.delegate = self let decodedHtmlString = base64Decode(encodedHtml) webView.loadHTMLString(decodedHtmlString, baseURL: nil) loadPrint() } private func loadPrint() { let printInfo = UIPrintInfo(dictionary: nil) printInfo.orientation = .landscape printController.printInfo = printInfo printController.printFormatter = webView.viewPrintFormatter() Timer.scheduledTimer(withTimeInterval: 0.6, repeats: false) { _ in self.printController.present(animated: true) { _, _, error in guard let error = error else { return } self.error = error } } } private func base64Decode(_ text: String) -> String { if let restoreData = Data(base64Encoded: text) { if let restoreString = String(data: restoreData, encoding: .utf8) { return restoreString } } return "" } I'm sure did nothing with UIPrintOptionsTableViewController so I have no idea how did this crash happened and how to fix it. Can someone help me?