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 ('11feb9f2f2d1c55dd9a786a32c5c633b', -1, 1713868024, 1713868024, '03859fe0', -9, 0, 0)

Line : 187
File : sessions.php