در حین انجام عملیات خطایی رخ داده است.
The following has evaluated to null or missing:
==> assetRenderer.getThumbnailPath(renderRequest)  [in template "20097#20123#294150" at line 25, column 21]

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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: ${assetRenderer.getThumbnailPath(rend...  [in template "20097#20123#294150" at line 25, column 19]
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1<#if !entries?has_content> 
2	<#if !themeDisplay.isSignedIn()> 
3		${renderRequest.setAttribute("PORTLET_CONFIGURATOR_VISIBILITY", true)} 
4	</#if> 
5 
6<div class="alert alert-info"> 
7<@liferay_ui["message"] key="there-are-no-results" /> 
8	</div> 
9</#if> 
10<div class="dpp-news" id="sp-${themeDisplay.getPortletDisplay().getId()}"> 
11<#list entries as entry> 
12	<#assign 
13	entry = entry 
14 
15	assetRenderer = entry.getAssetRenderer() 
16 
17	entryTitle = htmlUtil.escape(assetRenderer.getTitle(locale)) 
18 
19	viewURL = assetPublisherHelper.getAssetViewURL(renderRequest, renderResponse, assetRenderer, entry, !stringUtil.equals(assetLinkBehavior, "showFullContent")) 
20	/> 
21    <#assign dateFormat = "yyyy MM dd" /> 
22    <#assign publishDate=dateUtil.getDate(entry.getPublishDate(),dateFormat,locate)/> 
23<div class="item row mb-3">  
24    <div class="col-sm-3">  
25        <img src="${assetRenderer.getThumbnailPath(renderRequest)}" class="img-thumbnail hidden-xs"> 
26    </div>  
27    <div class="col-sm-9">  
28        <a href="${viewURL}">  
29            <h5 class="title "> ${entryTitle} </h5>  
30        </a>  
31        <h5 class="description ">${stringUtil.shorten(htmlUtil.escape(assetRenderer.getSummary(renderRequest, renderResponse)),300)} </h5>  
32        <h6 class="date" date-publish="${publishDate}">${dateUtil.getDate(entry.getPublishDate(),'yyyy dd MMM',locate)} </h6>  
33    </div>  
34</div> 
35</#list> 
36<script> 
37        box = document.querySelectorAll(".rtl #sp-${themeDisplay.getPortletDisplay().getId()} .date"); 
38    [].forEach.call(box, function(el) { 
39        var dp = el.getAttribute("date-publish"); 
40        el.innerHTML =moment(dp, 'YYYY MM DD') 
41                            .locale('fa') 
42                            .format('dddd DD MMMM YYYY'); 
43    }); 
44</script> 
45</div>