"change(s) detected" on console

[blalor]

Fava 1.30, Beancount 3.0.0

I see these messages on the console when Fava's running and I make changes to beancount files:

1 change detected
1 change detected
1 change detected
1 change detected
1 change detected
1 change detected
1 change detected
1 change detected
1 change detected
1 change detected
21 changes detected
13 changes detected
1 change detected
1 change detected
5 changes detected
7 changes detected
24 changes detected

I looked for those strings in the Fava source and don't see them, so I suspect it's from an included library. Maybe there's some logging that needs to be configured?