"Extract the contents of NullStudio_-_Animation_-_Update-2023-02-02.zip into your project's Assets/Animations folder, overwriting any existing files from the previous version."
If you can tell me a bit more, I can help you track down exactly what you need: NullStudio_-_Animation_-_Update-2023-02-02.zip
Where did you the file? (e.g., a specific forum, Discord, or site?) What software or game is this animation update for? I'll do my best to help you get it working! a specific forum