Admin side “GET https://cloughit.com.au/wordpress-plugins/async-javascript/…”

I’m seeing an error admin side from your servers…

Plugin: async-javascript
HTTP Request
GET https://cloughit.com.au/wordpress-plugins/async-javascript/aj-upgrade-notice.json
Response 403 Forbidden

Call Stack
WP_Http->request()
wp-includes/class-http.php:223
WP_Http->get()
wp-includes/class-http.php:593
wp_remote_get()
wp-includes/http.php:170
async_javascript_upgrade_notice()
wp-content/plugins/async-javascript/async-javascript.php:68
do_action(‘admin_notices’)
wp-includes/plugin.php:453