EndOfStreamException

I´m trying to scrape data from a list of URLs (H1, emails, etc) and I get now for everything the error

Exeption:EndOfStreamException
Message:Unable to read beyond the end of the stream

What does this mean ?

Do you mean getting an error after a while but previously it worked? Sounds like some throttle protection.

Can you share the list of urls, or partial list?

Yes it worked before. I´m referring to Amazon URLs:

After how many urls/requests do you usually get the error?