Storefront 2.4.1 has been tagged for release and uploaded to WordPress.org.
Here’s what’s changed pulled directly from the changelog:
* Fix - Fatal error caused by a method incorrectly defined as static.
* Fix - Remove unnecessary trailing slash in the first load_theme_textdomain() call.
Download the latest release of Storefront here or venture over to Dashboard → Updates to update your theme from WordPress.
As usual, if you spot any other issues, please log them in detail on Github.