sorry for the spam, but hopefully this will save some people debugging
if you use dark mode on Gerrit like me and visiting any page results in a completely white page (it looks blank, but it's actually not), you're prob hitting this bug:
the work around is to disable dark mode ... which can be hard when you can't see the UI toggle. you can do instead:
- open dev console (Ctrl-Shift-J)
- run localStorage.removeItem('dark-theme')
- refresh the page
- curse the brightness