Error when clicking the PDF button in FormRunner

Hello,
In the form runner, when I click on the PDF button, I get an error.  The log
is shown below.  How can I resolve this?

00:46:16,318 INFO  [org.orbeon.oxf.webapp.ProcessorService] (default task-3)
/fr/Testing/Testing/pdf/9bf6560428bfaf055f8622c91668cbf790242118 - Timing:
746 00:46:16,318 INFO  [org.orbeon.lifecycle] (default task-3) event:
{"request": "57", "session": "ddCkpqf2WgNW1LKU0mgTpcFJAtxfobm5vJStxDPd",
"source": "service", "message": "end: handle", "time": "747 ms", "threw":
"Could not initialize class org.xhtmlrenderer.css.constants.CSSName"}
00:46:16,319 ERROR [org.orbeon.oxf.controller.PageFlowControllerProcessor]
(default task-3) error caught {controller:
"oxf:/config/error-page-flow.xml", method: "POST", path:
"/fr/Testing/Testing/edit/9bf6560428bfaf055f8622c91668cbf790242118"}
00:46:16,324 ERROR [org.orbeon.oxf.controller.PageFlowControllerProcessor]
(default task-3)
+----------------------------------------------------------------------------------------------------------------------+
|An Error has Occurred                                                                                                
|
|----------------------------------------------------------------------------------------------------------------------|
|Could not initialize class org.xhtmlrenderer.css.constants.CSSName                                                  
|
|----------------------------------------------------------------------------------------------------------------------|
|Application Call Stack                                                                                              
|
|----------------------------------------------------------------------------------------------------------------------|
|oxf:/ops/pfc/xforms-xml-submission.xpl                                          
|executing processor           |  56|

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Hi Prasanna,

Are you by any chance using WildFly? If so, what version?

‑Alex

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Hi Prasanna, did you get to solve this issue? If not, is it something
happening just on WildFly?

‑Alex

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Follow me on Twitter: @avernet
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