Specifiche tecniche Unico Irap 2008

Normativa e prassi
Si è verificato un errore nell'elaborarazione del modello.
The following has evaluated to null or missing:
==> allegato  [in template "20116#20152#59008" at line 15, column 14]

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Tip: If the failing expression is known to be 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: #if allegato.getSiblings()?has_content  [in template "20116#20152#59008" at line 15, column 9]
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1<h1 class="underline">${.vars['reserved-article-title'].data}</h1> 
2<p> 
3    <strong>Oggetto:</strong>&nbsp;${oggetto.getData()} 
4</p> 
5<div class="indcart_gn"> 
6    <p> 
7         <#if docFile.tipoDoc?? > 
8            <i class="${docFile.tipoDoc.getData()}" aria-hidden="true"></i> 
9         </#if> 
10        <a href="${docFile.getData()}">Provvedimento</a> 
11    </p> 
12    <ul> 
13         
14         
15        <#if allegato.getSiblings()?has_content> 
16        	<#list allegato.getSiblings() as cur_allegato> 
17        	   <li> 
18        		<a href="${cur_allegato.getData()}"> 
19        			${cur_allegato.testoLinkAllegato.getData()} 
20        		</a> 
21        		</li> 
22        	</#list> 
23        </#if> 
24    </ul> 
25    ${sotto.getData()} 
26</div>