I think I found the root causes of the problem. Thanks for bringing this up. 
One of the problems was with the permissions configuration of our S3 bucket, the s3://livebook-blog/amazon-athena-integration/.
The other potential bug is related to the cache query config in the SQL Query Smart Cell. We’ll investigate further that possible bug.
In the meantime, I modified the blog post and the accompanying notebook. It should work now. Please start from scratch, import the notebook again, and let me know if it works for you.
If it doesn’t work, one possible way to fix it is to disable the query cache config for now, like this:
