Notice: Undefined property: wpdb::$use_mysqli in /var/www/html/wp-includes/class-wpdb.php on line 768

Fatal error: Uncaught Error: Call to undefined function mysql_get_server_info() in /var/www/html/wp-content/plugins/health-check/includes/class-health-check-site-status.php:52
Stack trace:
#0 /var/www/html/wp-content/plugins/health-check/includes/class-health-check-site-status.php(22): Health_Check_Site_Status->prepare_sql_data()
#1 /var/www/html/wp-content/plugins/health-check/includes/class-health-check-site-status.php(18): Health_Check_Site_Status->init()
#2 /var/www/html/wp-content/plugins/health-check/includes/class-health-check-site-status.php(2059): Health_Check_Site_Status->__construct()
#3 /var/www/html/wp-content/plugins/health-check/health-check.php(61): require_once('/var/www/html/w...')
#4 /var/www/html/wp-settings.php(473): include_once('/var/www/html/w...')
#5 /var/www/html/wp-config.php(139): require_once('/var/www/html/w...')
#6 /var/www/html/wp-load.php(50): require_once('/var/www/html/w...')
#7 /var/www/html/wp-blog-header.php(13): require_once('/var/www/html/w...')
#8 /var/www/html/index.php(17): requi in /var/www/html/wp-content/plugins/health-check/includes/class-health-check-site-status.php on line 52