Ghost gallery added, not wanted

Hello

I spent the better 30 + minutes trying to figure this out. I am beat. I tried viewing the code edit instead of code edit in (Gutenberg WordPress installed). But couldnt find and code/snippet o select and delete. Nor could I find anywhere else to remove this off thumb on top, just under the portfolio page name/title. Just above a full size image and correct gallery blocks underneath. A mystery it even popped up. Didint exist earlier today.

Any ideas?

Thanks in advance

/ Stefan

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