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 ('8a193bb5c0155bdb82abc6929a872cd2', -1, 1746975917, 1746975917, '0316d9be', 18, 0, 0)

Line : 189
File : sessions.php