Error message

• Warning: Cannot modify header information - headers already sent by (output started at /home/content/90/13932790/html/includes/common.inc:2607) in drupal_send_headers() (line 1239 of /home/content/90/13932790/html/includes/bootstrap.inc).
• PDOException: SQLSTATE[42S02]: Base table or view not found: 1146 Table 'goodlifecentre.watchdog' doesn't exist: 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:289:"SQLSTATE[42S02]: Base table or view not found: 1146 Table 'goodlifecentre.variable' doesn't exist: SELECT 1 AS expression FROM {variable} variable WHERE ( (name = :db_condition_placeholder_0) ) FOR UPDATE; Array ( [:db_condition_placeholder_0] => ctools_last_cron ) ";s:9:"%function";s:14:"variable_set()";s:5:"%file";s:53:"/home/content/90/13932790/html/includes/bootstrap.inc";s:5:"%line";i:999;s:14:"severity_level";i:3;} [:db_insert_placeholder_4] => 3 [:db_insert_placeholder_5] => [:db_insert_placeholder_6] => http://goodlifecentre.org/user/register [:db_insert_placeholder_7] => [:db_insert_placeholder_8] => 54.198.78.121 [:db_insert_placeholder_9] => 1524301933 ) in dblog_watchdog() (line 157 of /home/content/90/13932790/html/modules/dblog/dblog.module).