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) VALUES ('b9a94a1eb6f6ec5c2d08491d7517cd5c', -1, 1714300034, 1714300034, '1275bd07', -9, 0)

Line : 158
File : sessions.php