phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 'session_user_id'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in) VALUES ('2fcf232b62e7a76ddfa0de7a69655296', -1, 1714627738, 1714627738, '12de25a9', 21, 0)

Line : 158
File : sessions.php