Home page not showing, other pages are ok

hi,
template jp-shop, joomla 3.9.28, php 7.4.19.
the home page ( www.tecnolegal.it ) is not visible, other internal pages (e.g. www.tecnolegal.it/armi-corte-pistole-revolver.html ) are ok but if ERROR REPORT is set to ON appear this error advice: "Notice: Trying to access array offset on value of type int in /web/htdocs/www.tecnolegal.it/home/templates/jp-shop/warp/src/Warp/Config/Repository.php on line 243"

thank you

Please check if you deleted the default menu item!