无法在iOS平台上的Flutter中获取图像

Question

我正在使用下面的代码从flutter应用程序中的库中获取图像，它在Android中运行正常，并且已成功将图像上传到Firebase存储中，但是在iOS应用程序中使用相同图像时，当在IconButton中点击Container并在日志中我收到以下消息后，调用方法'getImage（）'

Lost connection to device.

Future getImage() async {
    File image = await ImagePicker.pickImage(source: ImageSource.gallery);
  if (image != null) {
      setState(() {
        avatarImageFile = image;
        isLoading = true;

      });
  }

  }

               Container(
                        child: Center(
                          child: Stack(
                            children: <Widget>[
                              (avatarImageFile == null)
                                  ? (photoUrl != ''
                                  ? Material(
                                child: CachedNetworkImage(
                                  placeholder: (context, url) => Container(
                                    child: CircularProgressIndicator(
                                      strokeWidth: 2.0,
                                      valueColor: AlwaysStoppedAnimation<Color>(themeColor),
                                    ),
                                    width: 90.0,
                                    height: 90.0,
                                    padding: EdgeInsets.all(20.0),
                                  ),
                                  imageUrl: photoUrl,
                                  width: 90.0,
                                  height: 90.0,
                                  fit: BoxFit.cover,
                                ),
                                borderRadius: BorderRadius.all(Radius.circular(45.0)),
                                clipBehavior: Clip.hardEdge,
                              )
                                  : Icon(
                                Icons.account_circle,
                                size: 90.0,
                                color: greyColor,
                              ))
                                  : Material(
                                child: Image.file(
                                  avatarImageFile,
                                  width: 90.0,
                                  height: 90.0,
                                  fit: BoxFit.cover,
                                ),
                                borderRadius: BorderRadius.all(Radius.circular(45.0)),
                                clipBehavior: Clip.hardEdge,
                              ),
                              IconButton(
                                icon: Icon(
                                  Icons.camera,
                                  color: primaryColor.withOpacity(0.5),
                                ),
                                onPressed: getImage,
                                padding: EdgeInsets.all(30.0),
                                splashColor: Colors.transparent,
                                highlightColor: greyColor,
                                iconSize: 30.0,
                              ),
                            ],
                          ),
                        ),
                        width: double.infinity,
                        margin: EdgeInsets.all(20.0),
                      ),