My WordPress site is now on AWS! I spent a good chunk of my time debugging the All-in-One WP Migration plugin to get my migration working, and I finally realized I skipped an important step in their migration documentation:
Migrate WordPress from PHP 5 to PHP 7
1. Make sure that all plugins are deactivated. This will ensure your website error is not caused by any third-party software
If you are getting stuck in the “Done Preparing Blogs” stage, then it could be because you didn’t deactivate all the plugins.