phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1194 Table '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 ('d7ef7f3982dd5f719f7c1cfcee0c1fb8', -1, 1369433675, 1369433675, '32139beb', 29, 0, 0)

Line : 172
File : sessions.php