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 ('f639fd0d9df7de6fe6110e7602c8faf2', -1, 1467159091, 1467159091, 'adf5384b', -9, 0)

Line : 158
File : sessions.php