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 ('d3298900a3d62b453e0f4da50b9fdc5e', -1, 1268289183, 1268289183, '266bbf6c', 19, 0, 0)

Line : 187
File : sessions.php