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

Than_HtetAung — Sun, 12 Dec 2021 16:55:30 GMT

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

Currently all the querytask, esrirequest and geometry task are failed to call or filter through map service.

We are using the esri proxy in the builder also.

Would like to understand when will that error occur and what item map specifically causing this error?

Best Regards,

Than Htet Aung

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

Yunpiao_WhitneyBai1 — Fri, 10 Mar 2017 00:43:33 GMT

I have the same problem when I use esri boilerplate template and try to open the index html directly. But in the IDE environment, it works fine.

Anyone knows to fix it?

Thanks

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

Than_HtetAung — Sat, 11 Mar 2017 06:10:08 GMT

Hi Yun,

I have fixed it by fixing proxy url in config.json file. Found out there is typo error in url.

==> Object.c.getProxyUrl

So I will suggest, try to read from error stack and check one level by another.

Most of the time configuration has issue.

Best Regards,

Than

topic "Cannot read property '3' of null" WebAppBuilder Custom Widget in Web AppBuilder Custom Widgets Questions

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

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

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