"Cannot extract connector information from the configuration provided" error when deploying S3 Connector

When deploying an AWS S3 Connector using Lenses UI on versions 5.1.0 through 5.2.1, I receive an error that reads: Cannot extract connector information from the configuration provided.

My configuration is valid, so what is the issue?

This was a back-end bug that has been patched; please try again & let us know if you still encounter the error.