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 ('1fd61e4146685f99fb2c1a0ebb8ec6b9', -1, 1268392233, 1268392233, '266bbf69', 3, 0, 0)

Line : 187
File : sessions.php