Fatal error: Uncaught Error: Call to undefined function register_activation_hook() in C:\xampp\htdocs\cubacontrol\wp-content\plugins\wpforms-lite\includes\class-install.php:20 Stack trace: #0 C:\xampp\htdocs\cubacontrol\wp-content\plugins\wpforms-lite\includes\class-install.php(179): WPForms_Install->__construct() #1 {main} thrown in C:\xampp\htdocs\cubacontrol\wp-content\plugins\wpforms-lite\includes\class-install.php on line 20