Upgrade Process Of Your Store Has Failed

Upgrade process of your store has failed

Please restore the pre-upgrade backup manually or via a link sent to your email address, then contact our technical support.

Tech details: Couldn't complete migration 20180907075629_addons_vendor_communication_added_privileges_for_admin.php. Reason: Duplicate entry 'manage_vendor_communication' for key 'PRIMARY'.

Completed migrations: 13 out of 21.

How to fix it? MV 4.8.2 -> MV 4.9.1

Thank you.

Are you trying to use store import? Why wouldn't you just upgrade rather than store import?

Are you trying to use store import? Why wouldn't you just upgrade rather than store import?

I am not importing. Started upgrade and stuck. Seems created backups but not upgraded and I start over and getting this error. How I can fix this issue?

Thank you.

Contact CS-Cart support team. Looks like something wrong in the database structure