Enable WordPress / PHP Debugging

debug.wp-config.php

<?php

# put on top at wp-config.php

define('WP_DEBUG', true);
define('WP_DEBUG_DISPLAY', true);
define( 'WP_DEBUG_LOG', true );
ini_set('display_errors', 'True'); // on screen
ini_set('error_reporting', E_ALL);

# There has been a critical error on this website.
# Learn more about troubleshooting WordPress.

# Fatal error: Uncaught Error: Call to undefined function mysql_connect() in <PATH>/wp-includes/wp-db.php:1785
# Stack trace: #0 <PATH>/wp-includes/wp-db.php(724): wpdb->db_connect() #1 <PATH>/wp-includes/load.php(561): wpdb->__construct('db022658', 'Saei2Gopu!27', 'db022658', 'localhost') #2 <PATH>/wp-settings.php(124): require_wp_db() #3 <PATH>/wp-config.php(116): require_once('<path>') #4 <PATH>/wp-load.php(50): require_once('<path>') #5 <PATH>/wp-blog-header.php(13): require_once('<PATH>') #6 <PATH>/index.php(17): require('<PATH>') #7 {main} thrown in <PATH>/wp-includes/wp-db.php on line 1785
  
?>