Warning: Use of undefined constant action - assumed 'action' (this will throw an Error in a future version of PHP) in /var/www/html/app/newsletter.php on line 19

Warning: Use of undefined constant email - assumed 'email' (this will throw an Error in a future version of PHP) in /var/www/html/app/newsletter.php on line 31

Fatal error: Uncaught Error: Undefined class constant 'hostname' in /var/www/html/classes/clNewsletter.php:46 Stack trace: #0 /var/www/html/app/newsletter.php(32): clNewsletter->validate() #1 {main} thrown in /var/www/html/classes/clNewsletter.php on line 46