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 ('42e838d1e1cff289b079cca21d2e2119', -1, 1713568634, 1713568634, '030fca04', -10, 0, 0)

Line : 187
File : sessions.php