phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table '.\mymac\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 ('be74c2b382d377cab14c5b1fd3ba190f', -1, 1268346850, 1268346850, '266bbf6a', 17, 0, 0)

Line : 187
File : sessions.php