Fatal error: Uncaught Error: Call to undefined function woocommerce_register_additional_checkout_field() in /home/ksufwawh/public_html/estore/wp-content/plugins/eu-vat-for-woocommerce/includes/class-alg-wc-eu-vat-core.php:208 Stack trace: #0 /home/ksufwawh/public_html/estore/wp-includes/class-wp-hook.php(308): Alg_WC_EU_VAT_Core->register_additional_checkout_block_field('') #1 /home/ksufwawh/public_html/estore/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters(NULL, Array) #2 /home/ksufwawh/public_html/estore/wp-includes/plugin.php(517): WP_Hook->do_action(Array) #3 /home/ksufwawh/public_html/estore/wp-content/plugins/woocommerce/includes/class-woocommerce.php(703): do_action('woocommerce_ini...') #4 /home/ksufwawh/public_html/estore/wp-includes/class-wp-hook.php(308): WooCommerce->init('') #5 /home/ksufwawh/public_html/estore/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters(NULL, Array) #6 /home/ksufwawh/public_html/estore/wp-includes/plugin.php(517): WP_Hook->do_action(Array) #7 /home/ksufwawh/public_h in /home/ksufwawh/public_html/estore/wp-content/plugins/eu-vat-for-woocommerce/includes/class-alg-wc-eu-vat-core.php on line 208