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 ('0b36531da63b04360119f140eb97f4c3', -1, 1711615622, 1711615622, '2cc03522', 5, 0, 0)

Line : 187
File : sessions.php