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 ('ba49df71d6cd14318b0b20bd0d6544c3', -1, 1369085528, 1369085528, '36e04b65', 2, 0, 0)

Line : 189
File : sessions.php