modification of global variable "Promise.prototype.finally" is not allowed when using plugins at app.json.

在app.js里面写了Promise.prototype.finally这个方法，然后又引入了直播插件plugins: {

            "live-player-plugin": {

                "version": "1.0.7", 

                "provider": "wx2b03c6e691cd7370" 

            }

        }

然后开发工具报这个错误了modification of global variable "Promise.prototype.finally" is not allowed when using plugins at app.json.