navminiprogram:function(){

    wx.navigateToMiniProgram({

      shortLink: "#小程序://群接龙/rR2o6K6t2LwTkSu",

      success(res){

        console.log("success");

      },

      fail(err){ 

        console.log(err);

      }

    });

结果报错：

{errMsg:"navigateToMiniProgram:fail parameter error: parameter.appId should be String instead of Undefined;"}