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 ('7c814c85c613c21b77dce4b829689f14', -1, 1714011360, 1714011360, '038a8a90', -9, 0, 0)

Line : 187
File : sessions.php