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 ('cdedc9ca77659730d72217bba74268e6', -1, 1464265656, 1464265656, 'adf53624', -9, 0)

Line : 158
File : sessions.php