I am getting Authentication Error in Safari when Using Visualize.js or Iframes to Embed Dashboards, Reports into my web application. It is working perfectly fine with latest versions of Chrome , Firefox.
Currently Iam using basic type of authentication for visulaize.js i.e. like below
Also tried using Iframes and sending username, password as query params in the URL but Same Authentication Error pops up.
What version of Safari are you using and what version of the operating system?
I'm having the same error, on the iPad, iOS 9.3.2.