SQL info: MySQL Query Error

Time: 2018-6-23 1:10am
Script: /newsview.php

SQL: INSERT INTO t_session (sid,uid,islogin,isadmin, updated, sessiondata ) VALUES ('01c8b1','','','', '1529687424', 'a:0:{}')
Error: Duplicate entry '01c8b1' for key 'PRIMARY'
Errno.: 1062