[Coldbox 3.8.5] cfpdf output to browser error

Communities ColdBox HMVC
1

This may be a Railo problem, but my Coldbox app running on Railo 4.2 give the following error when outputting a PDF stream to the browser:

Can’t cast Object type [Struct] to a value of type [binary]
Java type of the object is railo.runtime.text.pdf.PDFDocument

Here is the code:

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Any help is appreciated.
-Chris