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 ('14e8fb3cc1b548cf097dff4aadaec989', -1, 1714616971, 1714616971, '03915dd2', -4, 0)

Line : 158
File : sessions.php