I’m having a similar problem. Also, when first try to Export, I get a warning about the ‘/opt/bitnami/apps/wordpress/htdocs/wp-content/plugins/all-in-one-wp-migration/storage’ folder needing read and write permissions.
Note: this is on a bitnami wordpress AMI on AWS.
When I connect to the instance to change the permissions, the storage folder isn’t even there. I created the folder and then changed the permissions. Now the export is stuck on “renaming exported file”.
Everything was working great with the previous versions.