Bug Fix : admin-ajax.php bad request error

I got javascript error message : Failed to load resource: the server responded with a status of 400 (Bad Request)

Admin logged “Edit Page” & modify & update & got error message

cache.js call admin-ajax.php & action: ‘tailpress_ajax’

[Solution : Modify Frontend.php]

if ( !is_user_logged_in() ) {
                wp_enqueue_script(
                    $this->tailpress->name,
                    $this->tailpress->assets_js . 'cache.js',
                    array($md5_name, $this->tailpress->main_script_name)
                );   
            }