Why does this file have only one system per page?

Dorico
1

I can’t figure out what I did to make this happen—only one system per page?
OneSystemPerPage.dorico.zip (557 KB)

2

In the piano reduction, you messed up the music frame margins in Page Setup.

The bottom margin is 101.6mm, but I guess it was supposed to be 10.16.

3

THANK YOU!