Preparing Users… "No Results Found"

I am moving to a new domain to test an unrelated upgrade, I am using the Multisite Migration tool. The domain is: flrltest.org
I received errors with the import from file method, so I uploaded the backup file to: wp-content\ai1wm-backups

And selected Restore.

I am stuck at 53%, the progress message is, “Preparing Users…” and a page keeps displaying with the following message: “No Results Found – The page you requested cannot be found.”

The restore is stalled, and keeps looping to this error page.

I am afraid to “STOP IMPORT” because the new site looks good…

Do you have any recommendations?

Thanks!

https://ww.wp.xz.cn/plugins/all-in-one-wp-migration/