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 ('b9c77386cae5647fc97bd8dde6b396fe', -1, 1715004797, 1715004797, '12df7ddb', -9, 0, 0)

Line : 189
File : sessions.php