Fatal error: Uncaught Error: Call to undefined function storefront_sanitize_hex_color() in /home/customer/www/spunge.co.uk/public_html/onlineshop/wp-content/plugins/storefront-designer/storefront-designer.php:646 Stack trace: #0 /home/customer/www/spunge.co.uk/public_html/onlineshop/wp-includes/class-wp-hook.php(292): Storefront_Designer->sd_add_customizer_css('') #1 /home/customer/www/spunge.co.uk/public_html/onlineshop/wp-includes/class-wp-hook.php(316): WP_Hook->apply_filters(NULL, Array) #2 /home/customer/www/spunge.co.uk/public_html/onlineshop/wp-includes/plugin.php(484): WP_Hook->do_action(Array) #3 /home/customer/www/spunge.co.uk/public_html/onlineshop/wp-includes/general-template.php(3009): do_action('wp_head') #4 /home/customer/www/spunge.co.uk/public_html/onlineshop/wp-content/themes/storefront/header.php(18): wp_head() #5 /home/customer/www/spunge.co.uk/public_html/onlineshop/wp-includes/template.php(730): require_once('/home/customer/...') #6 /home/customer/www/spunge.co.uk/public_html/onlineshop/wp-includes/t in /home/customer/www/spunge.co.uk/public_html/onlineshop/wp-content/plugins/storefront-designer/storefront-designer.php on line 646