setMaxTweets() causing issues leading to empty documents

First of all, thank you for the work you put into this! :)

When setting the maximum amount of Tweets to retrieve, I get an error if the number gets too big or is zero. "lxml.etree.ParserError: Document is empty" is the error I'm getting. It works fine for 100 Tweets, but if I change it to 500 then I get this error message and it seemingly can't retrieve any Tweets at all.

I'm using the got3 version so if that's not supported, I understand.