Check the below link before upgrade:- 1) /public_html/vendor/magento/module-checkout/view/frontend/templates/cart/item/default.phtml 2) /var/www/html/magento___2/tapestore/vendor/magento/module-catalog/view/frontend/layout/catalog_product_view.xml
Check the below link before upgrade:- 1) /public_html/vendor/magento/module-checkout/view/frontend/templates/cart/item/default.phtml 2) /var/www/html/magento___2/tapestore/vendor/magento/module-catalog/view/frontend/layout/catalog_product_view.xml