Uncaught exception thrown in session handler.

PDOException: SQLSTATE[HY000]: General error: 1206 The total number of locks exceeds the lock table size: INSERT INTO {sessions} (sid, ssid, uid, cache, hostname, session, 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); Array ( [:db_insert_placeholder_0] => dwofji5hrVEpZv_CQJwrYrgihX820c-IPbn0OG4dwXg [:db_insert_placeholder_1] => dwofji5hrVEpZv_CQJwrYrgihX820c-IPbn0OG4dwXg [:db_insert_placeholder_2] => 0 [:db_insert_placeholder_3] => 0 [:db_insert_placeholder_4] => 3.237.200.21 [:db_insert_placeholder_5] => currentbib|s:2:"-1"; [:db_insert_placeholder_6] => 1600829123 ) in _drupal_session_write() (line 209 of /var/www/DrupalV7/includes/session.inc).