Howdy, just an FYI, the Sample Code: Visualize Features by Type is asking for User Authentication. The feature service that it uses shows that it requires an authentication token. Cheers!
And as an aside, didn't the sample pages used to have a feedback mechanism, similar to the "Was this page helpful?" link in the lower right corner in the API reference pages? Clicking Yes or No provided a dialog so you could send an email about an issue on the page.
Thanks for letting us know @AntonioMedrano , we will get it fixed
You're welcome @Sage_Wall , always happy to help. 🙂