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 ('f21baa8ce244b6c67e7f3eca1a8abb45', -1, 1406901149, 1406901149, '36edf90a', -1, 0, 0)

Line : 172
File : sessions.php