Something is with Loop on items

Hello!
I have Code step which results a list (you can see at the bottom right corner of the screenshot):


After that I have loop step where I want to use the result from this step, but something is wrong with it.

Before it worked fine, but now I want to update this flow and I can’t publish because of this step.

Could you please help to get what’s going on?

I wasn’t able to update this flow, but I created a duplicate, updated it and removed original. IDK what it was. Let’s remove this ticket.