An internal error occurred during: "JBoss Tools Model Update".

log:

java.lang.NullPointerException
at java.util.zip.ZipFile.getInputStream(ZipFile.java:180)
at org.jboss.tools.common.model.filesystems.impl.JarAccess.getContent(JarAccess.java:200)
at org.jboss.tools.common.model.filesystems.impl.JarAccess.isTextEntry(JarAccess.java:235)
at org.jboss.tools.common.model.filesystems.impl.JarFolderImpl.createFileObject(JarFolderImpl.java:90)
at org.jboss.tools.common.model.filesystems.impl.JarFolderImpl.loadChildren(JarFolderImpl.java:74)
at org.jboss.tools.common.model.filesystems.impl.JarSystemImpl.loadChildren(JarSystemImpl.java:46)
at org.jboss.tools.common.model.impl.RegularObjectImpl.getChildByPathPart(RegularObjectImpl.java:140)
at org.jboss.tools.common.model.filesystems.impl.JarFolderImpl.getChildByPathPart(JarFolderImpl.java:131)
at org.jboss.tools.common.model.impl.XModelObjectImpl.getChildByPath(XModelObjectImpl.java:335)
at org.jboss.tools.jst.web.tld.TaglibMapping.findTldsInJar(TaglibMapping.java:224)
at org.jboss.tools.jst.web.tld.TaglibMapping.findTldsInJars(TaglibMapping.java:208)
at org.jboss.tools.jst.web.tld.TaglibMapping.revalidate(TaglibMapping.java:84)
at org.jboss.tools.jsf.web.JSFWatcherContributor.updateProject(JSFWatcherContributor.java:49)
at org.jboss.tools.common.model.project.Watcher.updateAll(Watcher.java:106)
at org.jboss.tools.common.model.project.Watcher.access$0(Watcher.java:89)
at org.jboss.tools.common.model.project.Watcher$WatcherRunnable.run(Watcher.java:47)
at org.jboss.tools.common.model.XJob.runInWorkspace(XJob.java:158)
at org.eclipse.core.internal.resources.InternalWorkspaceJob.run(InternalWorkspaceJob.java:38)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55)