Ajax Error

Hi

I keep on getting Ajaz errors when sending out test emails. Can anyone help?

OS: Linux host.ilovenz.me 3.10.0-042stab120.5 #1 SMP Tue Oct 25 22:31:12 MSK 2016 x86_64
PHP: Linux 5.6.30 en_US.UTF-8
PHP Dependencies: iconv=Yes, spl_autoload=Yes, openssl=Yes, sockets=Yes, allow_url_fopen=Yes, mcrypt=Yes, zlib_encode=Yes
WordPress: 4.7.2 en_US UTF-8
WordPress Theme: Kleo Child
WordPress Plugins: CloudFlare Flexible SSL, Gravity Forms, AdRotate Professional, Akismet Anti-Spam, bbpress Simple Advert Units, bbPress, BP Profile Search, rtMedia for WordPress, BuddyPress and bbPress, BuddyPress, Cloudflare, cPanel & WHM? Site Software, Disqus Comment System, Inline Related Posts, Jetpack by WordPress.com, WPBakery Visual Composer, K Elements, Outerbridge Nested Shortcodes, OneSignal Push Notifications, Postman SMTP, Redirection, Social Articles, Social Warfare – Pro, Social Warfare, TinyMCE Advanced, User Role Editor, Yoast SEO, WP Quiz Pro, WP Smush, WP Super Cache
WordPress wp_mail Filter(s): wp_staticize_emoji_for_email
Postman: 1.7.2
Postman Sender Domain (Envelope|Message): ilovenz.me | ilovenz.me
Postman Prevent Message Sender Override (Email|Name): No | No
Postman Active Transport: SMTP (smtps:login://mail.ilovenz.me:587)
Postman Active Transport Status (Ready|Connected): Yes | Yes
Postman Deliveries (Success|Fail): 117 | 11