While doing a scheduled refresh of a dataset its failing due to this:
Amazon Athena experienced an internal error due to unavailable capacity. Please try submitting the query again and if the issue reoccurs, contact AWS support for further assistance.
I’d recommend recreating the schedule for the refresh, and if it fails with the same error then create an AWS support ticket.
Here are the steps to open a support case. If your company has someone who manages your AWS account, you might not have direct access to AWS Support and will need to raise an internal ticket to your IT team or whomever manages your AWS account. They should be able to open an AWS Support case on your behalf.