Can't able to update v7.1 to Latest version

Hello Team,
I would like to update my version. But i got error while am updating v7.1 to higher.

Import Error: Vehicle_Log is missing

Please tell me how do i facing this error and hope troubleshooting will necessary action for this case. So kindly help to rectify and migrated to latest version.

Awaiting for your reply…

Can you share full traceback?