I have been using Updraft Migrator tool for a few weeks now and love how easy it is. However I have one site which won’t migrate to my test server for me to rebuild the site.
To help us work out the cause of your problem, can you please send us a copy of the migration log?
You can find this log in the ‘wp-content/updraft’ directory of your new site location.
You can send the log file as an attachment or copy the contents into an online tool (such as https://pastebin.com/ )