WP Smush Pro Image metadata not found

Smush has stopped smushing for about a week now and I'm getting an "Image metadata not found" error when attempting to smush from the backend. Images are also not smushing on upload anymore. Latest update today has not fixed the issue. I am on Wordpress 4.11. I have tried all configurations of the options at the top of the backend with no success. Please advise. Thank you.