按照样例尝试了两种方式都会报同样的错误； 第一种：         const ctx = wx.createCameraContext()         ctx.takephoto({             quality: 'high',             succsess: (res) => {                 this.setData({                     src:res.tempImagePath                 })             }         }) 第二种：         this.ctx = wx.createCameraContext();          this.ctx.takePhoto({              quality: 'high',              success: (res) => {                  this.setData({                      src:res.tempImagePath                  })              }          })