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, session_admin) VALUES ('bc8b9946f716a54eb328e6be636d47db', -1, 1713588739, 1713588739, '1277d5eb', -10, 0, 0)

Line : 187
File : sessions.php