No Sound After Rendering Project

When I rendered my finished project, it only plays in Audacity and not in any other player. It renders the full length of the project, but no sound. First time since using Audacity this has happened.
Using Audacity on Windows 10.
Project rendered as an mp3 file at 96kps.

If no files play outside of Audacity, and you have been recording with a USB device, see: