Fatal error: Uncaught Error: Call to undefined function Automattic\Jetpack\Assets\wp_is_serving_rest_request() in /var/www/vip8/sites/vip1320991/httpd/htdocs/wp-content/plugins/insta-gallery/jetpack_vendor/automattic/jetpack-assets/src/class-script-data.php:113 Stack trace: #0 /var/www/vip8/sites/vip1320991/httpd/htdocs/wp-content/plugins/insta-gallery/jetpack_vendor/automattic/jetpack-assets/src/class-script-data.php(88): Automattic\Jetpack\Assets\Script_Data::is_authenticated_rest_request() #1 /var/www/vip8/sites/vip1320991/httpd/htdocs/wp-includes/class-wp-hook.php(303): Automattic\Jetpack\Assets\Script_Data::render_script_data('') #2 /var/www/vip8/sites/vip1320991/httpd/htdocs/wp-includes/class-wp-hook.php(327): WP_Hook->apply_filters('', Array) #3 /var/www/vip8/sites/vip1320991/httpd/htdocs/wp-includes/plugin.php(471): WP_Hook->do_action(Array) #4 /var/www/vip8/sites/vip1320991/httpd/htdocs/wp-includes/script-loader.php(2034): do_action('wp_print_script...') #5 /var/www/vip8/sites/vip1320991/httpd/htdocs/wp-includes/ in /var/www/vip8/sites/vip1320991/httpd/htdocs/wp-content/plugins/insta-gallery/jetpack_vendor/automattic/jetpack-assets/src/class-script-data.php on line 113