Log report result after export

[nkooman-bzs]

Motivation

Error reporting is only available when importing.
I can see that an error appeared during my export. However, I have no idea what or why.
Completed 'Preparing content items & language variants'. Successfully processed '0' items. Failed '1' items

Proposed solution

Include similar logic to report errors from import.

Additional context

Add any other context, screenshots, or reference links about the feature request here.

[Enngage]

Hi @nkooman-bzs, I'll have a look at this and implement it (if I don't encounter any major issues) this or next week ;)