Can't open ePub in Book "The operation couldn’t be completed. No such file or directory" report

I have a bunch of ePub files a friend of mine gave me, but some of them won't load into Books (3.2). I'm running macOS Big Sur 11.6.1

The warning "The operation couldn’t be completed. No such file or directory" appear when I try to double click the "bad" files or drop it directly into Books.

Any idea why / How can I fix this ?

Solution 1:

Thanks to @mmmmmm I was able to correct the files with calibre !

After adding the book inside calibre, I went to Edit book

Then Check book (the bug icon)

And finnaly Try to correct all fixable errors automatically

I had 48 errors on the book, and afterward only 36 warning but it was fine for Books.app

I also found out that I could open the ePub on my iPhone by sending it on my email, and then it appear on both my mac and my iPhone via icloud synch