Fatal error: Uncaught Error: Call to undefined function register_activation_hook() in /home/customer/www/profesionalweb.eu/public_html/wp-config.php:18 Stack trace: #0 /home/customer/www/profesionalweb.eu/public_html/wp-config.php(127): IrimiaVet_Management->__construct() #1 /home/customer/www/profesionalweb.eu/public_html/wp-load.php(50): require_once('/home/customer/...') #2 /home/customer/www/profesionalweb.eu/public_html/wp-blog-header.php(13): require_once('/home/customer/...') #3 /home/customer/www/profesionalweb.eu/public_html/index.php(17): require('/home/customer/...') #4 {main} thrown in /home/customer/www/profesionalweb.eu/public_html/wp-config.php on line 18