phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './why9work_phpbb1/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) VALUES ('c8d71964b91b2403a64d27af4be0af85', -1, 1464737791, 1464737791, 'adf53848', 14, 0)

Line : 158
File : sessions.php