phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './kidnem998/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 ('7e1e8e8018dbc1a776682d24bb2a1a70', -1, 1455347018, 1455347018, '36c4e8a2', -1, 0, 0)

Line : 187
File : sessions.php