The file not exists and user is not authenticated is normal: The file not exists is an unavoidable error where we’re attempting to load an optional configuration file from the server, but it is not found, so you get a 404. The ‘user isn’t authenticated’ is normal because when you first launch the app, you aren’t authenticated.
The real error is related to the ‘mismatched closing tag’, which I believe I have heard reported before, but I am not able to reproduce this myself.
Can you confirm a few things:
- What version of Atlas and WebAPI do you have installed
- Do you have any browser extensions installed that may interfere with the browser rendering a page? Could you attempt to try a different browwser (although only Chrome is supported, this would just be a test).