During migration from and/or to SharePoint sites, you have noticed the following error:
” FATAL_ERROR for the site [Name of the site]: Cannot connect to the parent site [url of the site].”.
The [Name of the sites] was checked-out to one of the users for editing purposes and the platform cannot connect to it.
Ask your user to check-in the impacted site and publish his/her modifications. Then restart the migration.
To check, by whom the site was checked-out, go to this site and check the information message: