Error message

• Warning: Cannot modify header information - headers already sent by (output started at C:\Inetpub\vhosts\thailandarchery.com\httpdocs\includes\common.inc:2773) in drupal_send_headers() (line 1471 of C:\Inetpub\vhosts\thailandarchery.com\httpdocs\includes\bootstrap.inc).
• PDOException: SQLSTATE[HY000]: General error: 2006 MySQL server has gone away: 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] => %type: !message in %function (line %line of %file). [:db_insert_placeholder_3] => a:6:{s:5:"%type";s:12:"PDOException";s:8:"!message";s:166:"SQLSTATE[HY000]: General error: 2006 MySQL server has gone away: SELECT uid, name, picture, data FROM {users} WHERE uid IN (:uids_0); Array ( [:uids_0] => 1 ) ";s:9:"%function";s:16:"user_node_load()";s:5:"%file";s:71:"C:\Inetpub\vhosts\thailandarchery.com\httpdocs\modules\user\user.module";s:5:"%line";i:3692;s:14:"severity_level";i:3;} [:db_insert_placeholder_4] => 3 [:db_insert_placeholder_5] => [:db_insert_placeholder_6] => http://www.thailandarchery.com/?q=tracker [:db_insert_placeholder_7] => [:db_insert_placeholder_8] => 54.80.248.78 [:db_insert_placeholder_9] => 1498565758 ) in dblog_watchdog() (line 163 of C:\Inetpub\vhosts\thailandarchery.com\httpdocs\modules\dblog\dblog.module).