Exception in loading JSF2 model

Caused by: java.lang.IllegalArgumentException: Attempted to beginRule: R/, does not match outer scope rule: P/cdi
at org.eclipse.core.runtime.Assert.isLegal(Assert.java:63)
at org.eclipse.core.internal.jobs.ThreadJob.illegalPush(ThreadJob.java:134)
at org.eclipse.core.internal.jobs.ThreadJob.push(ThreadJob.java:333)
at org.eclipse.core.internal.jobs.ImplicitJobs.begin(ImplicitJobs.java:85)
at org.eclipse.core.internal.jobs.JobManager.beginRule(JobManager.java:286)
at org.eclipse.core.internal.resources.WorkManager.checkIn(WorkManager.java:118)
at org.eclipse.core.internal.resources.Workspace.prepareOperation(Workspace.java:2282)
at org.eclipse.core.internal.resources.Project$1.run(Project.java:604)
at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2344)
at org.eclipse.core.internal.resources.Project.internalBuild(Project.java:597)
at org.eclipse.core.internal.resources.Project.build(Project.java:124)
at org.jboss.tools.jsf.jsf2.bean.model.impl.JSF2Project.load(JSF2Project.java:257)
at org.jboss.tools.jsf.jsf2.bean.model.impl.JSF2Project.resolveStorage(JSF2Project.java:243)
at org.jboss.tools.jsf.jsf2.bean.model.impl.JSF2Project.resolve(JSF2Project.java:250)
at org.jboss.tools.jsf.jsf2.bean.model.JSF2ProjectFactory.getJSF2Project(JSF2ProjectFactory.java:47)
at org.jboss.tools.jsf.jsf2.bean.model.JSF2ProjectFactory.getJSF2ProjectWithProgress(JSF2ProjectFactory.java:72)
at org.jboss.tools.jsf.jsf2.bean.el.JSF2ElResolver.resolveVariables(JSF2ElResolver.java:85)
at org.jboss.tools.common.el.core.ca.AbstractELCompletionEngine.resolveELOperand(AbstractELCompletionEngine.java:478)
at org.jboss.tools.common.el.core.ca.AbstractELCompletionEngine.resolveELOperand(AbstractELCompletionEngine.java:293)
at org.jboss.tools.common.el.core.ca.AbstractELCompletionEngine.resolve(AbstractELCompletionEngine.java:171)
at org.jboss.tools.jst.web.kb.internal.validation.ELValidator.validateElOperand(ELValidator.java:384)
at org.jboss.tools.jst.web.kb.internal.validation.ELValidator.validateELExpression(ELValidator.java:350)
at org.jboss.tools.jst.web.kb.internal.validation.ELValidator.validateEL(ELValidator.java:325)
at org.jboss.tools.jst.web.kb.internal.validation.ELValidator.validateFile(ELValidator.java:292)
at org.jboss.tools.jst.web.kb.internal.validation.ELValidator.validate(ELValidator.java:211)
at org.jboss.tools.common.validation.ValidatorManager.validate(ValidatorManager.java:117)
at org.jboss.tools.common.validation.ValidatorManager.validateInJob(ValidatorManager.java:81)
... 12 more