Is it just me or are other people having problems with the Tutorials?

I have been working through a number of the ACE tutorials and been encountering and working around various issues ranging from incomplete instructions (tutorials explaining the need to install sqlite3 and ngrok, whilst others dont) and trying to generate new templates hanging, all of which I have managed to navigate through.

However I havent been able to work around 404 issues which keep being the final blocker which seem to stem from some kind of authentication issues.

Is this a known issue?