SQL info: MySQL Query Error

Time: 2021-9-17 3:45pm
Script: /message_yb.php

SQL: INSERT INTO t_session (sid,uid,islogin,isadmin, updated, sessiondata ) VALUES ('76e817','','','', '1631864743', 'a:0:{}')
Error: Duplicate entry '76e817' for key 'PRIMARY'
Errno.: 1062