phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './tripleac_Forum/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 ('7fb5e8bb9b66fe972b7cdeca38058c96', -1, 1462525875, 1462525875, '36a76fb4', -1, 0, 0)

Line : 187
File : sessions.php