Creating an Epub from ID. Get error ..'Index Page entry not found'

Hello.. I'm back again !

1.

After exporting to an EPub from ID, I see two errors..

Index Page entry not found : is missing: 2

Index Page entry not found : is missing: 28

and,

In Calibre, the TOC shows a couple of empty rows after some of the TOC entries.

to check,

I exported the TOC from ID as HTML in case I could see anything but it looks okay, not showing any empty rows that I can see.

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2.

I also notice in Calibre a few 'The link is empty'  errors like this..

OEBPS/BOOK_Almost_a_Book.xhtml (line: 35 column: 0)

This link is empty. This is almost always a mistake. Either fill in the link destination or remove the link tag.

and lastly,

3.

I get many of these..

OEBPS/css/idGeneratedStyles.css (line: 357 column: 13)

Unexpected missing generic font family (font-family-no-missing-generic-family-keyword).

 When I check is ee it references  'the fonts Alex Brush' and 'Times New Roman' font which I use throughout the book.

So even after trying to find the problems and fixing them, I am once again at your mercy and hoping you're having a great day 🙂

How can I correct these please as I intend to create a Kindle from it.

Thank you