Thank you very much for making this. It didn’t work for me on google play books before converting to mobi and back to epub using calibre. This is that version:
https://drive.google.com/file/d/1h5OeJPZFaUPeYFIn05Z50eOzdJvksGd_/view?usp=sharing
Ah, totally, thank you for the tip and how to generate it myself.