phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './vdn/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) VALUES ('b81db26377a9e08797c1bc2687953a36', -1, 1412219679, 1412219679, '36cdfd84', -4, 0)

Line : 170
File : sessions.php