Error message

• Warning: Cannot modify header information - headers already sent by (output started at /var/www/htdocs/drupal/includes/common.inc:2546) in drupal_send_headers() (line 1002 of /var/www/htdocs/drupal/includes/bootstrap.inc).
• PDOException: SQLSTATE[HY000]: General error: 2013 Lost connection to MySQL server during query: INSERT INTO {watchdog} (uid, type, message, variables, severity, link, location, referer, hostname, timestamp) VALUES (:db_insert_placeholder_0, :db_insert_placeholder_1, :db_insert_placeholder_2, :db_insert_placeholder_3, :db_insert_placeholder_4, :db_insert_placeholder_5, :db_insert_placeholder_6, :db_insert_placeholder_7, :db_insert_placeholder_8, :db_insert_placeholder_9); Array ( [:db_insert_placeholder_0] => 0 [:db_insert_placeholder_1] => cron [:db_insert_placeholder_2] => Cron has been running for more than an hour and is most likely stuck. [:db_insert_placeholder_3] => a:0:{} [:db_insert_placeholder_4] => 3 [:db_insert_placeholder_5] => [:db_insert_placeholder_6] => http://www.internationalinnovativeinstitute.org/drupal/user/login?destination=node/37%23comment-form [:db_insert_placeholder_7] => [:db_insert_placeholder_8] => 3.233.224.8 [:db_insert_placeholder_9] => 1576318638 ) in dblog_watchdog() (line 131 of /var/www/htdocs/drupal/modules/dblog/dblog.module).