boto is no more maintained and it has been replaced by the latest boto3 library.
I'm surprised that this issue has not been raised earlier but I guess not many people use the S3FileAdmin layer for their Flask-Admin. I would be happy to contribute to updating the S3FileAdmin add-on but I need to get a hang of it's documentation.
Added to my to-do!
I'm sure @metadaddy will be willing to help.
https://github.com/flask-admin/flask-admin/blob/46d5a6ee5dd4d298c8824047a4cd9f7cc404348a/flask_admin/contrib/fileadmin/s3.py#L4
botois no more maintained and it has been replaced by the latest boto3 library. I'm surprised that this issue has not been raised earlier but I guess not many people use theS3FileAdminlayer for their Flask-Admin. I would be happy to contribute to updating theS3FileAdminadd-on but I need to get a hang of it's documentation. Added to my to-do! I'm sure @metadaddy will be willing to help.