This error appears when navigating to Performance, or the main W3TC settings page.

This is due to a typo in the latest CloudFormation template on the AWS Marketplace page. An update is currently pending, but you can download the corrected template here.

Screen Shot 2018-03-05 at 12.15.35 PM.png

To fix this issue, run the following command:

mysql -h <Aurora Cluster Endpoint> -P 3306 -u <db connection user> -p<db connection password> -D <database name> < /home/ec2-user/w3tc_cdn.sql

You can get the Aurora Cluster Endpointdatabase credentials, and database name from wp-config.php.

The command above will run SQL that creates a table required for the W3TC CDN to work.