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 ('b2f758b4bf6a4741c1440b83ab65e7ae', -1, 1714742199, 1714742199, '12e3727d', 21, 0)

Line : 158
File : sessions.php