Plutext

I am getting this error:

org.docx4j.openpackaging.exceptions.Docx4JException: Error marshalling Content_Types
Caused by: java.lang.NullPointerException at org.docx4j.jaxb.NamespacePrefixMapperUtils.setProperty(NamespacePrefixMapperUtils.java:155)


I am using docx4j 3.2.1 and JAXBNamespacePrefixMapper-2.2.4 are deployed in my ear.

Here is my jboss-deployment-structure.xml file.
<jboss-deployment-structure xmlns="urn:jboss:deployment-structure:1.1">
<deployment>
<dependencies>
<module name="com.sun.xml.bind" />
<module name="javax.xml.bind.api" />
</dependencies>
</deployment>
</jboss-deployment-structure>


What am I doing wrong?