New install, no login page

Hello there,
I decided to try cyberpanel on a fresh VPS running Ubuntu 20.04 (LTS) x64, and everything appears to have done without a hitch.

However, it would appear that the login page is MIA, error page 500 after timeout.
The webadmin login appears to work, but the cyberpanel doesn’t - anyone have any tips on how get the main login page up?

Nevermind, it came to life on its own - I swear I’m not crazy!