phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 144 Table './b18432_child/phpbb_sessions' is marked as crashed and last (automatic?) repair failed

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('2c2fd950ed159ad28d93cad1c5b2374b', -1, 1501267319, 1501267319, '36a160ef', 34, 0, 0)

Line : 193
File : sessions.php