SQL info: MySQL Query Error

Time: 2021-9-17 3:41pm
Script: /message_ydyf.php

SQL: INSERT INTO t_session (sid,uid,islogin,isadmin, updated, sessiondata ) VALUES ('0d1b2a','','','', '1631864512', 'a:0:{}')
Error: Duplicate entry '0d1b2a' for key 'PRIMARY'
Errno.: 1062