I am using Storefront 9.2

I have got the add to cart form showing on my featured products by adding the following line:
HTML Code:
<xsl:value-of select="aspdnsf:AddtoCartForm(ProductID, VariantID, 0, 'left')" disable-output-escaping="yes" />
The Quantity Box and Add to Cart button are now visible on the homepage but when I click the Add to Cart button nothing happens.

Any ideas how I can get this working?