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 ('2b8273d1eb9e5f69c402ad1df6f5a337', -1, 1754676458, 1754676458, 'd849d871', 2, 0, 0)

Line : 189
File : sessions.php