我试图加载一个文件，我已保存为我的iOS内容拦截器，但我一直得到此日志，它不会工作。这是我得到的代码和日志，有人能帮我找到问题吗？
谢谢
可选（Error Domain=NSCocoaErrorDomain Code=4097“连接到名为com的服务。apple.SafariServices.ContentBlockerLoader”UserInfo={NSDebugDescription=连接到名为com的服务。apple.SafariServices.ContentBlockerLoader}）

import UIKit
import MobileCoreServices

class ActionRequestHandler: NSObject, NSExtensionRequestHandling {

    func beginRequestWithExtensionContext(context: NSExtensionContext) {
        let attachment = NSItemProvider(contentsOfURL: NSBundle.mainBundle().URLForResource("blockerList", withExtension: "json"))!

        let item = NSExtensionItem()
        item.attachments = [attachment]

        if let urlToFile = BlackListManager.sharedInstance.urlToFile(), userFile = NSItemProvider(contentsOfURL: urlToFile) {
            item.attachments = [userFile]
        }

        print(item.attachments)

        context.completeRequestReturningItems([item], completionHandler: { expired in
            print("%@", expired)
        })
    }
}