Hi Arefund , sorry if I insist.
The problem produces the installation package QuickStart as I described earlier.
To create the condition just use the Quickstart Template Baseline with the Layout = mainBody - Inset - Left - Right.
Disable modules Bodybottom1, Bodybottom2, Bodybottom3 and modules Bodytop1, Bodytop2, Bodytop3.
Reduce the content of article Sample News item to a single line (preferably two or three words) and load in the front-end page /index.php/grids-preview.
I enclose a picture of what I described.
Thanks for the support