Fatal error: Uncaught Error: Call to undefined function Automattic\Jetpack\Assets\wp_is_serving_rest_request() in /home/kayahanasaki/www/webr8/webr8/wp-content/plugins/quadmenu/jetpack_vendor/automattic/jetpack-assets/src/class-script-data.php:113 Stack trace: #0 /home/kayahanasaki/www/webr8/webr8/wp-content/plugins/quadmenu/jetpack_vendor/automattic/jetpack-assets/src/class-script-data.php(88): Automattic\Jetpack\Assets\Script_Data::is_authenticated_rest_request() #1 /home/kayahanasaki/www/webr8/webr8/wp-includes/class-wp-hook.php(307): Automattic\Jetpack\Assets\Script_Data::render_script_data('') #2 /home/kayahanasaki/www/webr8/webr8/wp-includes/class-wp-hook.php(331): WP_Hook->apply_filters('', Array) #3 /home/kayahanasaki/www/webr8/webr8/wp-includes/plugin.php(474): WP_Hook->do_action(Array) #4 /home/kayahanasaki/www/webr8/webr8/wp-includes/script-loader.php(2067): do_action('wp_print_script...') #5 /home/kayahanasaki/www/webr8/webr8/wp-includes/class-wp-hook.php(307): wp_print_head_scripts('') #6 /home/kayahanasaki/w in /home/kayahanasaki/www/webr8/webr8/wp-content/plugins/quadmenu/jetpack_vendor/automattic/jetpack-assets/src/class-script-data.php on line 113