Issue After restoring, site not works

[kojot]

Hi,

This is first time that I used Plesk's restore function.

Yesterday, I backed up, all webspaces one by one, without problems.
And today I tried to revert one subdomain.

I checked "Sites" and "Database" and restored it successfuly, and after restoring Magento frontpage did not opened. I got few errors with suggestion that I need to run bin/magento setup:upgrade
I did that, but problems are still there.
I tried with setting permissions, but now I have error 500

I'm using Plesk 12.5.30, on Debian Debian 7.6.
Also, after unsuccessful update magento from 2.0.4 to 2.1 I want to revert version 2.0.4
Also, that Magento site is not installed via Plesk's APP

What I can do?

 

[kojot]

I found my old manually created backup, and I restored it.
Please, if you can give me more information about this.
Because I used backup from Plesk Panel for other sites also. But today first time restore.
Are all my backups are damaged?

How to check it?