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In my situation it was problem with version of stax jar. It is located in JBoss lib directory. I had to add this dependency to my pom.xml

     <dependency>

        <groupId>stax</groupId>

        <artifactId>stax</artifactId>

        <version>1.2.0</version>

        <scope>provided</scope>

    </dependency>

It resolved my problem.

All works fine.

Regards