Puppet users - Mar 2014 - Error 400 on SERVER: invalid byte sequence in UTF-8

I keep getting this error with a module I wrote.  Apparently, it doesn't 
like something about my module, but I don't see anything interesting about 
it.  I found the bug below, but I don't know which config.ru to edit for 
the workaround.  Has anyone else seen this?

https://projects.puppetlabs.com/issues/20897

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