phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '3a8967f7c2b962e26ed980a9b016444b' for key 'phpbb_sessions.PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('3a8967f7c2b962e26ed980a9b016444b', -1, 1771026585, 1771026585, 'd849d821', -9, 0, 0)

Line : 187
File : sessions.php