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An error occurred while processing the template.
The following has evaluated to null or missing:
==> .vars['reserved-article-display-date']  [in template "20101#20128#760377" at line 28, column 27]

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Tip: It's the final [] step that caused this error, not those before it.
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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: ${.vars["reserved-article-display-dat...  [in template "20101#20128#760377" at line 28, column 25]
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1<#include "${templatesPath}/103607"/> 
2<#if Immagine?has_content && Immagine.getData()?has_content> 
3 
4<div class="marginBottom20"> 
5		<a class="fancybox" href="#dialogImg" title="${htmlUtil.escapeAttribute(.vars['reserved-article-title'].getData())}"> 
6			<img src="${Immagine.getData()}" alt="imgDettaglio" class="img-responsive contentImage"/> 
7		</a> 
8		<div id="dialogImg" style="width:400px; display:none"> 
9		    <img src="${Immagine.getData()}" class="img-responsive"/> 
10		</div> 
11 
12	</div> 
13 
14	<!--<div class="marginBottom20"> 
15		<a class="fancybox" href="#dialogImg" title="${.vars['reserved-article-title'].getData()}"> 
16			<img src="${Immagine.getData()}" alt="imgDettaglio" class="img-responsive contentImage"/> 
17		</a> 
18		<div style="display:none;"> 
19			<div id="dialogImg"> 
20				<img src="${Immagine.getData()}" class="img-responsive" alt="${.vars['reserved-article-title'].getData()}"/> 
21			</div> 
22		</div> 
23	</div>--> 
24</#if> 
25<#assign categories=getCategoriesOfArticle()/> 
26	<div class="marginBottom20"> 
27		 
28			${.vars['reserved-article-display-date'].getData()?datetime("EEE, d MMM yyyy HH:mm:ss Z")?string("dd/MM/yyyy")}</label> 
29	</div> 
30	<#if categories?size!=0> 
31        <div class="marginBottom20"><h6 class="tipologia">${categories?first}</h6></div> 
32    </#if> 
33 
34	<div class="marginBottom20"> 
35		<h3>${Titolo.getData()}</h3> 
36	</div> 
37	<div class="marginBottom20"> 
38		<section> 
39			<article> 
40				<p> 
41${Contenuto.getData()} 
42				</p> 
43			</article> 
44		</section> 
45	</div> 
46</div> 
47 
48<#if Allegati?has_content && Allegati.getSiblings()?has_content && (Allegati.getSiblings()?first)?has_content && (Allegati.getSiblings()?first).getData()!=''>		 
49	<#assign documentFolderAndEntryLocalService = serviceLocator.findService("com.liferay.document.library.kernel.service.DLAppService")> 
50	 
51	<div>             
52		<table class="grid table table-responsive" cellspacing="0" rules="all" border="1" id="cphMain_ucDettaglioContenuto_gvAllegati" style="display:table;width:100%;border-collapse:collapse;"> 
53            	<tbody> 
54            		<tr> 
55            			<th class="text-center" scope="col" style="width:80%;"> 
56            				Nome documento 
57            			</th> 
58            			<th class="text-center" scope="col" style="width:20%;"> 
59            				Data 
60            			</th> 
61            		</tr> 
62 
63	<#list Allegati.getSiblings() as cur_Allegati> 
64	    <#if cur_Allegati?? && cur_Allegati.getData()?has_content && cur_Allegati.getData()!=''> 
65		<#assign link=cur_Allegati.getData()?substring(1)?split("/")/> 
66		<#assign groupId=themeDisplay.getScopeGroupId()/> 
67		<#assign uuid=link[4]?split("?")?first/> 
68		<#assign file=documentFolderAndEntryLocalService.getFileEntryByUuidAndGroupId(uuid,groupId)/> 
69            		    <#assign icon = getIconFromMime(file.getMimeType())/> 
70            		    <#assign fileSizeHuman = getFileSizeHuman(file.getSize())/> 
71            		    <tr> 
72            		        <td> 
73            		            <a href="/documents/${file.getGroupId()}/${file.getFolderId()}/${file.getTitle()}/${file.getUuid()}?download=true"><i class="fa ${icon}"></i>&nbsp;${file.getFileName()}</a> 
74            		            <div>(dimensione:${fileSizeHuman})</div> 
75	            				<p>${file.getDescription()}</p> 
76	            				 
77            		        </td> 
78            		        <td class="text-center"> 
79            		            ${file.getCreateDate()?string("dd/MM/yyyy")} 
80            		        </td> 
81            		    </tr> 
82            		   </#if> 
83	</#list> 
84	 
85	                </tbody> 
86            </table> 
87        </div> 
88 
89<#else> 
90<@showAllegati/> 
91</#if>