Security Reminder
Local does a pretty good job of scrubbing private info from the logs and the errors it produces, however there’s always the possibility that something private can come through. Because these are public forums, always review the screenshots you are sharing to make sure there isn’t private info like passwords being displayed.
I downloaded a backup of my live site named backup.tar.gz. I also downloaded a backup of my sql database and added it to the archive. When I click Import site selecting the backup file I the message “The archive has no wp-content folder” but the folder in the backup includes the wp-content folder.
Local’s native import might be having a problem with something in your file so as a workaround you can try the steps here to create a blank site, and then manually import your wp-content and SQL.