phpcms v9进不了后台怎么办？

问题：

MySQL 
Query : ｉｎｓｅｒｔ INTO 
`phpcms`.`v9_log`(`module`,`username`,`userid`,`action`,`querystring`,`time`,`ip`) 
VALUES 
('admin','phpcms','','index','?m=admin&c=index&a=login','2014-11-06 
11-22-14','127.0.0.1') 
MySQL Error : Duplicate entry '1243' for key 
'PRIMARY' 
MySQL Errno : 1062 
Message : Duplicate entry 
'1243' for key 'PRIMARY' 
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