javax.faces.FacesException: javax.servlet.ServletException: javax.servlet.jsp.JspException: Not nested in a tag of proper type. Error for tag with handler class:com.sun.faces.taglib.jsf_core.ValidatorTag

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javax.faces.FacesException: javax.servlet.ServletException: javax.servlet.jsp.JspException: Not nested in a tag of proper type. Error for tag with handler class:com.sun.faces.taglib.jsf_core.ValidatorTag
at com.sun.faces.context.ExternalContextImpl.dispatch(ExternalContextImpl.java:548)
at javax.faces.context.ExternalContextWrapper.dispatch(ExternalContextWrapper.java:93)
at javax.faces.context.ExternalContextWrapper.dispatch(ExternalContextWrapper.java:93)
at oracle.adfinternal.view.faces.config.rich.RecordRequestAttributesDuringDispatch.dispatch(RecordRequestAttributesDuringDispatch.java:44)
at javax.faces.context.ExternalContextWrapper.dispatch(ExternalContextWrapper.java:93)
at javax.faces.context.ExternalContextWrapper.dispatch(ExternalContextWrapper.java:93)
at javax.faces.context.ExternalContextWrapper.dispatch(ExternalContextWrapper.java:93)
at org.apache.myfaces.trinidadinternal.context.FacesContextFactoryImpl$OverrideDispatch.dispatch(FacesContextFactoryImpl.java:167)
at com.sun.faces.application.view.JspViewHandlingStrategy.executePageToBuildView(JspViewHandlingStrategy.java:364)
at org.apache.myfaces.trinidad.view.ViewDeclarationLanguageWrapper.buildView(ViewDeclarationLanguageWrapper.java:94)
at org.apache.myfaces.trinidadinternal.application.ViewDeclarationLanguageFactoryImpl$ChangeApplyingVDLWrapper.buildView(ViewDeclarationLanguageFactoryImpl.java:322)
at oracle.adfinternal.view.faces.lifecycle.ResponseRenderManager._processViewDefinitionLanguage(ResponseRenderManager.java:105)
at oracle.adfinternal.view.faces.lifecycle.ResponseRenderManager.runRenderView(ResponseRenderManager.java:41)
at oracle.adfinternal.view.faces.lifecycle.LifecycleImpl._renderResponse(LifecycleImpl.java:1104)
at oracle.adfinternal.view.faces.lifecycle.LifecycleImpl._executePhase(LifecycleImpl.java:389)
at oracle.adfinternal.view.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:255)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:594)
at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:280)
at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:254)
at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:136)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:341)
at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:25)
at oracle.adf.model.servlet.ADFBindingFilter.doFilter(ADFBindingFilter.java:192)
at oracle.adfinternal.view.faces.webapp.rich.RegistrationFilter.doFilter(RegistrationFilter.java:106)
at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl$FilterListChain.doFilter(TrinidadFilterImpl.java:478)
at oracle.adfinternal.view.faces.activedata.AdsFilter.doFilter(AdsFilter.java:60)

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