Errorea gertatu da txantiloia prozesatzerakoan.
The following has evaluated to null or missing:
==> aux.seccionFieldSetFieldSet.tituloRev1  [in template "18704#3874238#PLANTILLA_FORMACION_NO_REGLADA_DETALLE" at line 1, column 400]

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Tip: It's the step after the last dot that caused this error, not those before it.
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Tip: If the failing expression is known to legally refer to something that's sometimes null or missing, either specify a default value like myOptionalVar!myDefault, or use <#if myOptionalVar??>when-present<#else>when-missing</#if>. (These only cover the last step of the expression; to cover the whole expression, use parenthesis: (myOptionalVar.foo)!myDefault, (myOptionalVar.foo)??
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FTL stack trace ("~" means nesting-related):
	- Failed at: ${aux.seccionFieldSetFieldSet.tituloR...  [in template "18704#3874238#PLANTILLA_FORMACION_NO_REGLADA_DETALLE" at line 1, column 398]
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1<h1>${titulo.data?if_exists}</h1> <div class="formacion-detalle portlet-reg-detail">  <#if imagen.getData()?has_content>   <img src="${imagen.getData()?if_exists}" />  </#if>  <#if descripcion.data?has_content>   <p class="portlet-section-body"><strong>${descripcion.data?if_exists}</strong></p>  </#if>  <div class="portlet-section-body">   <#foreach aux in seccionFieldSet.getSiblings()>    <h2>${aux.seccionFieldSetFieldSet.tituloRev1.data?if_exists}</h2>    <p> ${aux.seccionFieldSetFieldSet.texto.data?if_exists} </p>   </#foreach>  </div> </div>