in app/design/frontend/Infortis/base/Infortis_Base/templates/product/list/slider.phtml
change role="select-all" to data-role="select-all"
Add catalog_product_view.xml file in app/design/frontend/Infortis/ultimo_child/Magento_Catalog/layout
Add below code:
<referenceBlock name="product.info.review" remove="true" />
<referenceBlock name="reviews.tab" remove="true" />