You didn't do much research, did you?

xml::sax could not find ParserDetails.ini in, which is quite similar to your node title even, returns as the two topmost hits:

• http://perl-xml.sourceforge.net/faq/#parserdetails.ini
• could not find ParserDetails.ini

Maybe if you can tell us, without that many exclamation marks, what your environment is, we could advise you better. Maybe all you have to do is to just reinstall XML::SAX.

Perl modules are often like bricks, one builds upon another. So it's not necessarily a surprise that even if you don't directly use one module that you will depend on other modules indirectly because one module builds its functionality upon other modules.