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 ('d663c3fb1d0d96d9a974e45b7835507a', -1, 1754583602, 1754583602, 'd849d88b', 9, 0, 0)

Line : 189
File : sessions.php