Thanks, @peternlewis!
Ah, I bet that's the problem. @AppleTooPlus, use System Settings > Privacy & Security > Automation > Keyboard Maestro and check that the Notes switch is on.
If it's currently off, turn it on. If it's on, turn it off and then back on.
Thanks! I assumed that Engine.log wouldn't have anything since @AppleTooPlus didn't mention that, but maybe notifications were also suppressed (e.g., with Do Not Disturb or some other Focus Mode).
@AppleTooPlus, if Engine.log errors do exist, you'd see something like this:
Aside: With respect to the Engine.log, you might find this macro useful: Engine.log Tool