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 ('1b0bdf9e4b76c95c10071f1e2a20c1c9', -1, 1714641223, 1714641223, '0387f6c1', -4, 0)

Line : 158
File : sessions.php