调用这个wx.requestSubscribeMessage报错
wx.requestSubscribeMessage({
                tmplIds: ['xxxx'],
                success (res) {
                    console.log(22222)
                 },
                 fail(res){
                     console.log(res)
                 }
              })
报错信息 requestSubscribeMessage:fail Unexpected token o in JSON at position 1
y有小伙伴知道什么原因吗