Youtube_player_flutter: [BUG] 缺少所需的客户端权利：MediaPlayback

描述错误
每次打开播放器时，我都会在控制台中打印如下错误：

2021-06-30 09:24:44.141532+0200 Media Creations[39379:12785401] [ProcessSuspension] 0x10c4dd0b0 - ProcessAssertion: Failed to acquire RBS MediaPlayback assertion 'WebKit Media Playback' for process with PID 39379, error: Error Domain=RBSAssertionErrorDomain Code=3 "Required client entitlement is missing" UserInfo={RBSAssertionAttribute=<RBSDomainAttribute| domain:"com.apple.webkit" name:"MediaPlayback" sourceEnvironment:"(null)">, NSLocalizedFailureReason=Required client entitlement is missing}

我的 YoutubePlayerController 如下所示：

final YoutubePlayerController _controller = YoutubePlayerController(
      initialVideoId: videoId,
      flags: YoutubePlayerFlags(
        enableCaption: false,
        hideThumbnail: true,
        forceHD: true,
        autoPlay: false,
        startAt: startAt,
      ),
    );

重现
在 IOS 上打开 YoutubePlayerFlutter

预期行为
打开播放器没有任何错误

截图
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技术细节：

• 设备：iPhone 10
• 操作系统：iOS 14.6
• 版本颤振 2.2.2

附加上下文
这是我的 YoutubePlayer 代码：

return OrientationBuilder(
      builder: (_, __) => YoutubePlayer(
        key: UniqueKey(),
        showVideoProgressIndicator: true,
        onReady: _controller.play,
        controller: _controller,
        controlsTimeOut: const Duration(seconds: 2),
        actionsPadding: const EdgeInsets.only(bottom: 10),
        progressIndicatorColor: _theme.primaryColor,
        onEnded: (_) => _controller.pause(),
        bottomActions: [
          Padding(
            padding: const EdgeInsets.only(
              left: VideoFullScreenButton.paddingSize +
                  VideoFullScreenButton.size * 2,
              right: VideoFullScreenButton.paddingSize,
            ),
            child: CurrentPosition(),
          ),
          ProgressBar(
            colors: ProgressBarColors(
              playedColor: _theme.primaryColor,
              handleColor: _theme.primaryColor,
            ),
            isExpanded: true,
          ),
          GestureDetector(
            onTap: () => launch(
              Strings.youtubeUrlFromId(
                videoId,
                seconds: _controller.value.position.inSeconds,
              ),
            ),
            child: const Padding(
              padding: EdgeInsets.only(
                left: VideoFullScreenButton.paddingSize,
                right: VideoFullScreenButton.paddingSize,
              ),
              child: FaIcon(
                FontAwesomeIcons.externalLinkAlt,
                color: Colors.white,
                size: VideoFullScreenButton.size,
              ),
            ),
          ),
          VideoFullScreenButton(
            preloadedFullScreen: isFullScreen,
            key: UniqueKey(),
            onTap: (isFullScreen) => _onVideoFullScreenTap(
              isFullScreen,
              context,
              _controller,
            ),
          ),
        ],
      ),
    );

我的项目中缺少什么吗？ 如有询问，我会立即回复。