Images in WordPress Media went missing

After I install Smush and compress the images, today when i log in to my client website, all the images in media went missing.

But when I checked on my ftp, the uploads folder and all the subfolders, images etc are still there.

May I know how to retrieve back those images without me uploading them again? I deactivated smush plugin for the time being. This problem came right after I install Smush.

Hope to hear a reply soon as currently I’m handling my client site.

https://wordpress.org/plugins/wp-smushit/