Сообщение об ошибке

• Warning: Cannot modify header information - headers already sent by (output started at /home/webmaster/domains/reporter-ua.com/html/includes/common.inc:2777) в функции drupal_send_headers() (строка 1486 в файле /home/webmaster/domains/reporter-ua.com/html/includes/bootstrap.inc).
• PDOException: SQLSTATE[40001]: Serialization failure: 1213 Deadlock found when trying to get lock; try restarting transaction: UPDATE {queue} SET expire=:db_update_placeholder_0 WHERE (item_id = :db_condition_placeholder_0) AND (expire = :db_condition_placeholder_1) ; Array ( [:db_update_placeholder_0] => 1739712199 [:db_condition_placeholder_0] => 773868415 [:db_condition_placeholder_1] => 0 ) в функции SystemQueue->claimItem() (строка 249 в файле /home/webmaster/domains/reporter-ua.com/html/modules/system/system.queue.inc).