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 ('a18b7ae141494d14bb63139f0c6c5e42', -1, 1714023682, 1714023682, '0390ac73', -1, 0, 0)

Line : 187
File : sessions.php