phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './phpbb/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 ('56c48b5b2bf7eaa5793e8c993506224e', -1, 1413958757, 1413958757, '36a78a35', -1, 0, 0)

Line : 189
File : sessions.php