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 ('7e7f8be099891e1effda0ad2ee943601', -1, 1419165835, 1419165835, '3691bf0e', 0, 0, 0)

Line : 172
File : sessions.php