wx.cloud.uploadFile({
              cloudPath: `image/${Date.parse(new Date()) + base64.encode(userInfo.nickName)}.png`, // 上传至云端的路径
              filePath: res.path, // 小程序临时文件路径
              success: res2 => {
                // 返回文件 ID
                _this.setData({
                  uploadImage: res2.fileID
                })
                wx.hideLoading()
              },
              fail: function(err){
                console.log(err)   // 错误是这里打印出来的
              }
            })