google crawls site errors and REMOVES page?

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 I imagine this will fix itself when google fully recrawls the
affected pages. But I am just curious as to how google will handle
seeing sitewide errors one day then dropping ranking pages, since
those pages were cached with errors.

It seems these long standing pages that have been in the index for 8+
years are now gone, no cache remnants now, no indexation. Should I be

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