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 ('a2afdcf1daf27f6afe02674fa8b7a1c1', -1, 1713904581, 1713904581, '1275ba5c', 20, 0)

Line : 158
File : sessions.php