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 ('3aec2736a3a31bb05672c907b97afe45', -1, 1713854745, 1713854745, '12ddbb79', -4, 0, 0)

Line : 187
File : sessions.php