phpBB : Critical Error

Error creating new session

DEBUG MODE

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

INSERT INTO sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('473cd771103c0499731f3b512d0d8b32', -1, 1715010435, 1715010435, '1276c1e8', -7, 0, 0)

Line : 189
File : sessions.php