SQL info: MySQL Query Error

Time: 2020-8-2 9:48pm
Script: /profile.php

SQL: INSERT INTO t_session (sid,uid,islogin,isadmin, updated, sessiondata ) VALUES ('d1e8ed','','','', '1596376109', 'a:0:{}')
Error: Duplicate entry 'd1e8ed' for key 'PRIMARY'
Errno.: 1062