com.sun.faces.config.ConfigurationException: CONFIGURATION FAILED! null

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com.sun.faces.config.ConfigurationException: CONFIGURATION FAILED! null
at com.sun.faces.config.ConfigManager.initialize(ConfigManager.java:379)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:5305)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:917)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:901)
at com.sun.enterprise.web.WebContainer.loadWebModule(WebContainer.java:1980)
at com.sun.enterprise.web.WebContainer.loadWebModule(WebContainer.java:1630)
at com.sun.enterprise.web.WebApplication.start(WebApplication.java:100)
at org.glassfish.internal.data.EngineRef.start(EngineRef.java:130)
at org.glassfish.internal.data.ModuleInfo.start(ModuleInfo.java:269)

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