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 ('83fac20fb86691e1b9a72b030bab04b8', -1, 1462348278, 1462348278, 'adf534f7', -1, 0)

Line : 158
File : sessions.php