Brakuj?ce pole “item”

I have a problem on my site. It seems to me that this happened after the last wordpress update. On my blog there was a problem with the navigation menu, the missing “item” field on one of the pages: https://www.zycie-jest-piekne.eu/pan-nagietek-do-uslug/
Apparently, it may have something to do with the template I use, apparently it may be incompatible with the new version.
Please check it.

Magdalena Forst

The page I need help with: [log in to see the link]