WordPress-Datenbank-Fehler: [Deadlock found when trying to get lock; try restarting transaction]
DELETE FROM `aitp_options` WHERE `option_name` = '_transient_timeout_wp_mail_logging_installed'

Warning: Cannot modify header information - headers already sent by (output started at /mnt/web202/a1/76/52362376/htdocs/STRATO-apps/wordpress_01/app/wp-includes/class-wpdb.php:1854) in /mnt/web202/a1/76/52362376/htdocs/STRATO-apps/wordpress_01/app/wp-includes/pluggable.php on line 1435 Warning: Cannot modify header information - headers already sent by (output started at /mnt/web202/a1/76/52362376/htdocs/STRATO-apps/wordpress_01/app/wp-includes/class-wpdb.php:1854) in /mnt/web202/a1/76/52362376/htdocs/STRATO-apps/wordpress_01/app/wp-includes/pluggable.php on line 1438