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 ('48c0bb8c356f37a167a6bfcbc94c9912', -1, 1472480216, 1472480216, '6ca2dbf3', 1, 0)

Line : 158
File : sessions.php