被动接收用户消息时，如果用户发的是表情包的话，会被识别是text类型的消息，但是content为：【收到不支持的消息类型，暂无法显示】。 在微信的订阅号助手小程序上是可以看到用户发的表情包的。所以请教下，表情包可不可以像图片一样，返回一个mediaID这种呢？

wx.saveImageToPhotosAlbum，保存图片到相册，部分图片在ios会报错，无法保存，安卓正常 测试机型：[图片] 代码片段：https://developers.weixin.qq.com/s/wR4d2Tm67WvO 错误信息：saveImageToPhotosAlbum:fail save fail:Error Domain=NSCocoaErrorDomain Code=4099 "The connection to service on pid 0 named com.apple.photos.service was interrupted, but the message was sent over an additional proxy and therefore this proxy has become invalid." UserInfo={NSDebugDescription=The connection to service on pid 0 named com.apple.photos.service was interrupted, but the message was sent over an additional proxy and therefore this proxy has become invalid.