Group has no children! Group

Hi All, I had this problem and I couldn’t solve it, can you please guide me in solving it?

Hello,
see previous discussion:

You have at least one group without any UI element (only calculates), see lines 248 ff. in your XLS.
Kind regards

Hello again,
Please, never publish any form here with personal data, like names. See your choice list.
See also community guidelines.

Thank you so much

Ah, maybe I forget to remove that personal information. thanks