Installed PicoCMS but can't configure

I’m running 25.0.2, Installed PicoCMS like I had in older versions but there appeared to be no templates or themes. I downloaded and copied over a theme and created a simple template by just creating a content and assets directory and the pico admin settings let me select both. So now my non-admin user account can create a pico site like before but I get a not found

Not found

The requested website page could not be found on the server. Maybe the page was deleted?

looks like pico doesn’t completely install?