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 ('ad8e0208a23124f1f3d4a7d0c69bbf0c', -1, 1757293223, 1757293223, 'd849d8bb', 3, 0, 0)

Line : 187
File : sessions.php