It may not be necessary to try again if the details are in your current main.log from the first attempt. I believe the issue is a symlink, as Kevin found in a previous issue.
https://community.kinsta.com/t/unable-to-pull-a-kinsta-site-now/1381/2
If you would like to DM me the log and sitename you’re trying to import, I can take a look and try to identify if that’s the case and which symlink may be the issue.