Transferring a site from hosting to a local server?

Question

open server

Good afternoon.
I tried to transfer the site from the hosting to the local server Open Server 5.2.2
Imported the database and all files from the site, started opening and got an error:

Mistake

Answer 1

UPD
Transferred the site through a special WP plugin, so if it doesn't work, then use Duplicator .
Thanks everyone for trying to help :)

Answer 2

Perhaps on the server you had PHP 5 and locally PHP 7, try changing the PHP version locally