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 ('8d182f59c0dd04f28e77fbebf327b437', -1, 1713907987, 1713907987, '12743fec', -7, 0, 0)

Line : 187
File : sessions.php