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 ('8dc4916cde2f94fa6f5d9b6abb63487f', -1, 1280508774, 1280508774, '266bbf5e', 3, 0, 0)

Line : 187
File : sessions.php