应用内容共享至舞台失败：RSC权限不足求助

我们的应用内容共享功能已失效一周，在Teams WebApp的开发者控制台中出现以下错误：

CID[main] ShareExtensibleAppButtonContainer: Installed app is undefined or doesn't have authorization
Insufficient RSC permission for appId:'XXXXXXX' with isChannelMeeting: false

该功能上月可正常使用，我方未对应用做任何改动。我尝试配置以下权限但无效果：

"authorization": {
    "permissions": {
      "orgWide": [],
      "resourceSpecific": [
        {
          "name": "MeetingStage.Write.Chat",
          "type": "Delegated"
        },
        {
          "name": "ChannelMeetingStage.Write.Group",
          "type": "Delegated"
        }
      ]
    }
  }

恳请各位协助解决该问题，谢谢！

内容的提问来源于stack exchange，提问作者MRoutchkan