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 ('5c1795a461c73cc9b17a5fcc2e0ced96', -1, 1268289344, 1268289344, '266bbf6a', 11, 0, 0)

Line : 187
File : sessions.php