org.jboss.tools.common.validation.JBTValidationException
	at org.jboss.tools.common.validation.ValidatorManager.validate(ValidatorManager.java:123)
	at org.jboss.tools.common.validation.ValidatorManager.validateInJob(ValidatorManager.java:81)
	at org.eclipse.wst.validation.internal.operations.ValidatorJob.run(ValidatorJob.java:78)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)
Caused by: java.lang.NullPointerException
	at org.jboss.tools.common.web.WebUtils.getWebRootFolders(WebUtils.java:128)
	at org.jboss.tools.jst.web.WebUtils.getWebRootFolders(WebUtils.java:83)
	at org.jboss.tools.jst.web.WebUtils.getWebRootFolders(WebUtils.java:87)
	at org.jboss.tools.jst.web.kb.internal.validation.WebValidator.shouldFileBeValidated(WebValidator.java:70)
	at org.jboss.tools.jst.web.kb.internal.validation.ELValidator.validateFile(ELValidator.java:273)
	at org.jboss.tools.jst.web.kb.internal.validation.ELValidator.validate(ELValidator.java:204)
	at org.jboss.tools.common.validation.ValidatorManager.validate(ValidatorManager.java:118)
	... 3 more