phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 'session_user_id'

INSERT INTO sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('a98f1d53e65732f5ef5c4d2f99c5c5ce', -1, 1715155715, 1715155715, '1275e3c2', -8, 0, 0)

Line : 189
File : sessions.php