phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './phpbb/phpbb_sessions' is marked as crashed and should be repaired

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('213a34f1f73d1354b34dbc5aae6c6a0c', -1, 1409675963, 1409675963, '32139438', -1, 0, 0)

Line : 187
File : sessions.php