Uncaught exception thrown in session handler.

PDOException: SQLSTATE[HY000]: General error: 2006 MySQL server has gone away: SELECT 1 AS expression FROM {sessions} sessions WHERE ( (sid = :db_condition_placeholder_0) AND (ssid = :db_condition_placeholder_1) ); Array ( [:db_condition_placeholder_0] => Bxjo3KqTpCEDG8iuV2-P8DHi1EJW5RjMwMeRq8d3PyE [:db_condition_placeholder_1] => Bxjo3KqTpCEDG8iuV2-P8DHi1EJW5RjMwMeRq8d3PyE ) in _drupal_session_write() (line 209 of /home/fxbsuraksha/public_html/includes/session.inc).