How to use the feeluown.logger.LOG.error function in feeluown

None, partial(requests.get, url, timeout=5))
            res = yield from future
            if not res.status_code == 200:
                LOG.warning('connect to api.github.com timeout')
                return
            releases = res.json()
            for release in releases:
                if release['tag_name'] > cls.current_version:
                    title = u'发现新版本 %s hoho' % release['tag_name']
                    LOG.info(title)
                    content = release['name']
                    ControllerApi.notify_widget.show_message(title, content)
                    ViewOp.ui.STATUS_BAR.showMessage(title, 5000)
                    break
        except Exception as e:
            LOG.error(str(e))

def keyboard_tap_callback(proxy, type_, event, refcon):
        from AppKit import NSKeyUp, NSEvent, NSBundle
        NSBundle.mainBundle().infoDictionary()['NSAppTransportSecurity'] =\
            dict(NSAllowsArbitraryLoads=True)
        if type_ < 0 or type_ > 0x7fffffff:
            LOG.error('Unkown mac event')
            run_event_loop()
            LOG.error('restart mac key board event loop')
            return event
        try:
            key_event = NSEvent.eventWithCGEvent_(event)
        except:
            LOG.info("mac event cast error")
            return event
        if key_event.subtype() == 8:
            key_code = (key_event.data1() & 0xFFFF0000) >> 16
            key_state = (key_event.data1() & 0xFF00) >> 8
            if key_code in (16, 19, 20):
                # 16 for play-pause, 19 for next, 20 for previous
                if key_state == NSKeyUp:
                    if key_code is 19:
                        ControllerApi.player.play_next()

ControllerApi.player.pause()
            ControllerApi.notify_widget.show_message(
                    "通知", "正在尝试调用VLC视频播放器播放MV")
            try:
                subprocess.Popen(['vlc', url_middle, '--play-and-exit', '-f'])
            except:
                LOG.error('call vlc player failed')
        elif platform.system().lower() == 'Darwin'.lower():
            ControllerApi.player.pause()
            ControllerApi.notify_widget.show_message(
                    "通知", "准备调用 QuickTime Player 播放mv")
            try:
                subprocess.Popen(
                    ['open', '-a', 'QuickTime Player', url_middle])
            except:
                LOG.error('call quicktime player failed')

def keyboard_tap_callback(proxy, type_, event, refcon):
        from AppKit import NSKeyUp, NSEvent, NSBundle
        NSBundle.mainBundle().infoDictionary()['NSAppTransportSecurity'] =\
            dict(NSAllowsArbitraryLoads=True)
        if type_ < 0 or type_ > 0x7fffffff:
            LOG.error('Unkown mac event')
            run_event_loop()
            LOG.error('restart mac key board event loop')
            return event
        try:
            key_event = NSEvent.eventWithCGEvent_(event)
        except:
            LOG.info("mac event cast error")
            return event
        if key_event.subtype() == 8:
            key_code = (key_event.data1() & 0xFFFF0000) >> 16
            key_state = (key_event.data1() & 0xFF00) >> 8
            if key_code in (16, 19, 20):
                # 16 for play-pause, 19 for next, 20 for previous
                if key_state == NSKeyUp:
                    if key_code is 19:
                        ControllerApi.player.play_next()
                    elif key_code is 20:
                        ControllerApi.player.play_last()

def write_json_into_file(data_json, filepath):
    try:
        with open(filepath, "w") as f:
            data_str = json.dumps(data_json, indent=4)
            f.write(data_str)
        return True
    except Exception as e:
        LOG.error(str(e))
        LOG.error("Write json into file failed")
        return False

def write_json_into_file(data_json, filepath):
    try:
        with open(filepath, "w") as f:
            data_str = json.dumps(data_json, indent=4)
            f.write(data_str)
        return True
    except Exception as e:
        LOG.error(str(e))
        LOG.error("Write json into file failed")
        return False

return

        url_middle = mv_model['url_middle']
        clipboard = QApplication.clipboard()
        clipboard.setText(url_middle)

        cls.view.ui.STATUS_BAR.showMessage(
                u"程序已经将视频的播放地址复制到剪切板", 5000)
        if platform.system() == "Linux":
            ControllerApi.player.pause()
            ControllerApi.notify_widget.show_message(
                    "通知", "正在尝试调用VLC视频播放器播放MV")
            try:
                subprocess.Popen(['vlc', url_middle, '--play-and-exit', '-f'])
            except:
                LOG.error('call vlc player failed')
        elif platform.system().lower() == 'Darwin'.lower():
            ControllerApi.player.pause()
            ControllerApi.notify_widget.show_message(
                    "通知", "准备调用 QuickTime Player 播放mv")
            try:
                subprocess.Popen(
                    ['open', '-a', 'QuickTime Player', url_middle])
            except:
                LOG.error('call quicktime player failed')

keyboard_tap_callback,
        None
    )

    run_loop_source = Quartz.CFMachPortCreateRunLoopSource(
        None, tap, 0)
    Quartz.CFRunLoopAddSource(
        Quartz.CFRunLoopGetCurrent(),
        run_loop_source,
        Quartz.kCFRunLoopDefaultMode
    )
    # Enable the tap
    Quartz.CGEventTapEnable(tap, True)
    # and run! This won't return until we exit or are terminated.
    Quartz.CFRunLoopRun()
    LOG.error('Mac hotkey event loop exit')
    return []