'NonType' error with no human in the Pal boxe

Hi there,
I got an NonType error when trying to use Pal edit. I've taken away the only human from the Palbox but it seems to still get triggered and I don't find how to fix it.

<img width="1096" height="604" alt="Image" src="https://github.com/user-attachments/assets/2c09c682-2429-4177-8e5f-5f4b08533305" />