WordPress database error: [Index for table './chapmoal_sb/wp_options.MYI' is corrupt; try to repair it]
DELETE FROM `wp_options` WHERE `option_name` = 'yoast_premium_as_an_addon_installer'

Warning: Cannot modify header information - headers already sent by (output started at /var/www/html/wp-includes/class-wpdb.php:1854) in /var/www/html/wp-includes/pluggable.php on line 1435 Warning: Cannot modify header information - headers already sent by (output started at /var/www/html/wp-includes/class-wpdb.php:1854) in /var/www/html/wp-includes/pluggable.php on line 1438