Can I upload a project with Mixamo Animations to a public Github repo?

I always upload about anything I’m working on to Github for backup + sync between different PCs. I upload my UE4 projects to public Github repos simply because they’re free and I’m use to them.

So if I download an animation from the Mixamo website. Import the FBX to my project, set up the Anim Blueprints etc. Then I upload that project with the uassets to a public repo on Github for backup. Would there any problem in doing so? Is it either against UE4’s or Mixamos’s licensing?

I can’t speak to or comment on Mixamo licensing. You are ok to upload uprojects publicly, but you can’t upload UE4 source or Marketplace assets in any re-usable form.