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 ('0ac3b89bd6f445a857e666d7b845881f', -1, 1464507439, 1464507439, '36c62780', -1, 0, 0)

Line : 187
File : sessions.php