I am trying to upgrade from 2.1.9 to 2.2.0.

I have updated my composer.json file and have successfully run composer update. Have successfully upgraded from 2.1.6 to 2.1.9 but keep getting the below error going from 2.1.9 to 2.2.0.

[root@lmwebserver mageliveNOV]# php bin/magento setup:upgrade Cache cleared successfully File system cleanup: /var/www/html/mageliveNOV/generated/code/Composer /var/www/html/mageliveNOV/generated/code/Magento /var/www/html/mageliveNOV/generated/code/Symfony The directory '/var/www/html/mageliveNOV/generated/metadata/' doesn't exist - skipping cleanup Updating modules: Schema creation/updates: Module 'Aitoc_OrdersExportImport': Module 'Magento_Store': Module 'Ebizmarts_AutoResponder': Module 'Magento_Directory': Module 'Ebizmarts_Mandrill': Module 'Magento_Eav': Upgrading schema.. SQLSTATE[23000]: Integrity constraint violation: 1062 , query was: ALTER TABLE `eav_attribute_group` ADD UNIQUE `CATALOG_CATEGORY_PRODUCT_ATTRIBUTE_SET_ID_ATTRIBUTE_GROUP_CODE` (`attribute_set_id`,`attribute_group_code`) [root@lmwebserver mageliveNOV]#