AppEngine Error [ java.lang.NoClassDefFoundError: org/w3c/dom/ElementTraversal ]

[Javo via StackOverflow]

Version https://mvnrepository.com/artifact/xerces/xercesImpl/2.11.0.SP5 already contains the class ElementTraversal. Issue should be resolved by this.

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[Javo via StackOverflow]

Your issue can be resolved by updating to version 2.11.0.SP5, which already contains the class ElementTraversal.