Do I need to update meta descriptions for pages I've no-indexed?

I did a screaming frog search on a site I'm working on and I have a buncha pages missing meta descriptions.

I can go and add them in but a lot of them are pages I've no indexed.

So I have a couple questions.

1. If screaming frog is showing errors on these pages does that mean my no-index didn't work? I used Yoast several days ago to disallow showing the pages in search results.
2. Do I need to update these pages even if I no indexed them?

Thanks!

submitted by /u/MillennialDeadbeat
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