phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 'session_user_id'

INSERT INTO satshop_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('b05306e374d8b779ce63e984c9a3957d', -1, 1752122750, 1752122750, 'd849d8fd', -8, 0, 0)

Line : 189
File : sessions.php