You’ll want to inspect the web app as it is running under chrome (right click, last menu item). What you’ll probably see in the console window is an error about cross domain issues. You’ll want to look at posting on this board for content security policy. There are changes on the data server and within your app settings. They are outlined here in several threads.
And using another port number on a domain is considered cross domain. Content Security Policy in the app (project properties) and the access control allows origin on the server will need adjusting.
However, it may work today on some browsers without any settings as not all browsers have blocked all cross domain access, but it’s coming.