         pageHistoryFetcher.fetchEditMetrics(for: pageTitle, pageURL: pageURL) { result in
             switch result {
             case .failure(let error):
-                // TODO: Handle error
-                print(error)
+                self.showNoInternetConnectionAlertOrOtherWarning(from: error)
                 self.countsViewController.timeseriesOfEditsCounts = []
             case .success(let timeseriesOfEditCounts):
                 DispatchQueue.main.async {

        pageHistoryFetcher.fetchEditCounts(.edits, .anonEdits, .botEdits, .revertedEdits, for: pageTitle, pageURL: pageURL) { result in
            switch result {
            case .failure(let error):
                // TODO: Handle error
                print(error)
            case .success(let editCountsGroupedByType):
                DispatchQueue.main.async {
                    self.countsViewController.editCountsGroupedByType = editCountsGroupedByType

        }
        compareToolbarButton.isEnabled = collectionView.indexPathsForSelectedItems?.count ?? 0 == 2
    }

    // MARK: Error handling

    private func showNoInternetConnectionAlertOrOtherWarning(from error: Error, noInternetConnectionAlertMessage: String = CommonStrings.noInternetConnection) {
        if (error as NSError).wmf_isNetworkConnectionError() {
            if UIAccessibility.isVoiceOverRunning {
                UIAccessibility.post(notification: UIAccessibility.Notification.announcement, argument: noInternetConnectionAlertMessage)
            } else {
                WMFAlertManager.sharedInstance.showErrorAlertWithMessage(noInternetConnectionAlertMessage, sticky: true, dismissPreviousAlerts: true)
            }
        } else {
            if UIAccessibility.isVoiceOverRunning {
                UIAccessibility.post(notification: UIAccessibility.Notification.announcement, argument: error.localizedDescription)
            } else {
                WMFAlertManager.sharedInstance.showErrorAlertWithMessage(error.localizedDescription, sticky: true, dismissPreviousAlerts: true)
            }
        }
    }
}
