Fatal error: Uncaught Error: Call to undefined function Automattic\Jetpack\Assets\wp_is_serving_rest_request() in /www/htdocs/w00f3214/wordpress/wp-content/plugins/woocommerce-payments/vendor/automattic/jetpack-assets/src/class-script-data.php:113 Stack trace: #0 /www/htdocs/w00f3214/wordpress/wp-content/plugins/woocommerce-payments/vendor/automattic/jetpack-assets/src/class-script-data.php(88): Automattic\Jetpack\Assets\Script_Data::is_authenticated_rest_request() #1 /www/htdocs/w00f3214/wordpress/wp-includes/class-wp-hook.php(307): Automattic\Jetpack\Assets\Script_Data::render_script_data('') #2 /www/htdocs/w00f3214/wordpress/wp-includes/class-wp-hook.php(331): WP_Hook->apply_filters('', Array) #3 /www/htdocs/w00f3214/wordpress/wp-includes/plugin.php(476): WP_Hook->do_action(Array) #4 /www/htdocs/w00f3214/wordpress/wp-includes/script-loader.php(2108): do_action('wp_print_script...') #5 /www/htdocs/w00f3214/wordpress/wp-includes/class-wp-hook.php(307): wp_print_head_scripts('') #6 /www/htdocs/w00f3214/wordpress/wp-includes/class-wp-hook.php(331): WP_Hook->apply_filters(Array, Array) #7 /www/htdocs/w00f3214/wordpress/wp-includes/plugin.php(476): WP_Hook->do_action(Array) #8 /www/htdocs/w00f3214/wordpress/wp-includes/general-template.php(3042): do_action('wp_head') #9 /www/htdocs/w00f3214/wordpress/wp-content/themes/flatsome/header.php(10): wp_head() #10 /www/htdocs/w00f3214/wordpress/wp-includes/template.php(770): require_once('/www/htdocs/w00...') #11 /www/htdocs/w00f3214/wordpress/wp-includes/template.php(716): load_template('/www/htdocs/w00...', true, Array) #12 /www/htdocs/w00f3214/wordpress/wp-includes/general-template.php(48): locate_template(Array, true, true, Array) #13 /www/htdocs/w00f3214/wordpress/wp-content/themes/flatsome/page-blank.php(5): get_header() #14 /www/htdocs/w00f3214/wordpress/wp-includes/template-loader.php(106): include('/www/htdocs/w00...') #15 /www/htdocs/w00f3214/wordpress/wp-blog-header.php(19): require_once('/www/htdocs/w00...') #16 /www/htdocs/w00f3214/wordpress/index.php(17): require('/www/htdocs/w00...') #17 {main} thrown in /www/htdocs/w00f3214/wordpress/wp-content/plugins/woocommerce-payments/vendor/automattic/jetpack-assets/src/class-script-data.php on line 113