Hi there!
That error can happen if you are using a not updated version of some of my plugins. Probably, you are using another plugin of mine that relies on my Old Eli Book, which uses anime.js to make some animation movement.
If you update the Eli Book, you will probably need to update these plugins too. If you can show to me a screenshot of your plugin manager, listing all my plugins, I can tell to you what is that you need to update. Something like the below:
