jessem
Thanks for letting me know!
That error usually comes up if the shortcut tries to pull items from a Reminders list that doesn’t exist.
Reminders setup:
To make the Reminders section work, make sure you have a list named:
—or just edit the shortcut to use the list you already have in your Reminders app.
If the list is missing or empty, the shortcut can’t find anything and throws the error you saw. Once the right list is in place, it should run smoothly.