We are getting the Error posting to API: 500 Internal Server Error when trying to run a bulk smush. I'm assuming this is because we are utilizing WP Offload S3 to host our users images on a CDN. Uploading new image seems to work fine - smushes them and then Offload moves them to the CDN.
It would make sense if the plugin didn't know where to look for the existing images, but it can give our users a bit of a scare if they see that thinking the plugin is broken. Any thoughts/ideas?