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 ('032c1d21c3ecf3aae15848e2f7c64f61', -1, 1711725457, 1711725457, '23a871f8', -10, 0, 0)

Line : 187
File : sessions.php