2.0升级至2.1 升级失败

从2.0 升级至2.1，提示

升级失败SQLSTATE[42S21]: Column already exists: 1060 Duplicate column name 'product'

The sql is: ALTER TABLE `zt_action` ADD `product` MEDIUMINT NOT NULL AFTER `objectID` ,
ADD `project` MEDIUMINT NOT NULL AFTER `product`

\nSQLSTATE[42S02]: Base table or view not found: 1146 Table 'zentao.zt_extension' doesn't exist

The sql is: ALTER TABLE `zt_extension` ADD `type` VARCHAR( 20 ) NOT NULL DEFAULT 'extension' AFTER `license`

 

请问该怎么解决？