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 ('e806c7b91a7ba9f1f713529e6f69edb6', -1, 1713518000, 1713518000, '0380c7d2', -7, 0, 0)

Line : 187
File : sessions.php