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, session_admin) VALUES ('b923a63c75a89dc38ab5977c82947aa3', -1, 1713550558, 1713550558, '030f05b7', -4, 0, 0)

Line : 187
File : sessions.php