Improved visibility of errors/logging when attempting to Copy Data to Sandbox.

Currently, when the Copy Data to Sandbox process fails, the customer receives an email mentioning that the process completely failed, however, there isn't any details available of it.

It would be nice to have those details, as small failures (e. g. copy of only a few spaces in Confluence) can be manually solved by exporting/importing the failed spaces instead of copying the entire instance again to Sandbox.