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    java.lang.NoClassDefFoundError: javax/xml/parsers/SAXParserFactory
        at com.sun.faces.config.ConfigureListener$WebXmlProcessor.getConfiguredFactory(ConfigureListener.java:1987)
        at com.sun.faces.config.ConfigureListener$WebXmlProcessor.scanForFacesServlet(ConfigureListener.java:1960)
        at com.sun.faces.config.ConfigureListener$WebXmlProcessor.<init>(ConfigureListener.java:1934)
        at com.sun.faces.config.ConfigureListener.contextInitialized(ConfigureListener.java:300)
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