"Cannot read property '3' of null" WebAppBuilder Custom Widget

Than_HtetAung

Hi Guys,

I am getting this error message when it is calling a map service with esriRequest object in webappbuilder widget.

Below is the code snippet

 esriRequest({
    url: this.url,
    content: {
    f: 'json'
 },
    handleAs: 'json'
 }).then(lang.hitch(this, function (response) {
    console.log("successfully call");
 }
 this.emit('details-loaded', response);
 }), lang.hitch(this,function(error){
   console.log("got error");
    console.log(error);
 }));

Below is the error log

TypeError: Cannot read property '3' of null
at new f (https://js.arcgis.com/3.17/init.js:450:489)
at Object.c.urlToObject (https://js.arcgis.com/3.17/init.js:700:111)
at Object.c.getProxyUrl (https://js.arcgis.com/3.17/init.js:701:272