phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './med4um_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 ('1fbf8ac5de73ab29e9fea6476bc8cd1b', -1, 1432690280, 1432690280, '36a7b912', 0, 0, 0)

Line : 180
File : sessions.php