Unwanted middle list page

I am new to Hugo and trying to build a site.
I use a them cupper-hugo-theme and I use the side menu.
I created 2 menu items.
But when I click on a menu item, it brings me first to a list page that I have not created…
I want to click on an item an go directly to my content page.
I don’t understand why I have this automatic list page created in between.
Thanks for the help.