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 ('f9d4e77c075ad2ea3f1d5a0df0d636b0', -1, 1715004725, 1715004725, '12778b32', 8, 0, 0)

Line : 189
File : sessions.php