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 ('54b177b54c0e94219235f5ba1d00f1b1', -1, 1713578642, 1713578642, '039177c7', -11, 0, 0)

Line : 187
File : sessions.php