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The following has evaluated to null or missing:
==> fileEntry.contentUrl  [in template "31942#31983#66302" at line 18, column 106]

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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: #assign viewURL = themeDisplay.getPor...  [in template "31942#31983#66302" at line 18, column 25]
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1<#assign dateFormat = "dd MMMMM yyyy" /> 
2 
3<section class="file-list"> 
4	<#if entries?has_content> 
5		<ul> 
6			<#list entries as entry> 
7 
8				<#assign entry = entry /> 
9				<#assign type = entry.getAssetRendererFactory().getType() /> 
10				<#assign assetRenderer = entry.getAssetRenderer() /> 
11				<#assign entryTitle = htmlUtil.escape(assetRenderer.getTitle(locale)) /> 
12				<#assign viewURL = assetPublisherHelper.getAssetViewURL(renderRequest, renderResponse, entry) /> 
13 
14	            <#if assetRenderer.getType() == "document"> 
15 
16	                <#assign dlFileEntryId = assetRenderer.getClassPK() /> 
17	                <#assign fileEntry = restClient.get('/headless-delivery/v1.0/documents/${dlFileEntryId}') /> 
18	                <#assign viewURL = themeDisplay.getPortalURL() + themeDisplay.getPathContext() + fileEntry.contentUrl /> 
19					<#assign size = (fileEntry.sizeInBytes / 1000000) /> 
20		            <li> 
21 
22		                <a href="${viewURL}" target="_new"> 
23			                <div class="file-icon"> 
24			                    <@getIcon type="${fileEntry.encodingFormat}" /> 
25			                </div> 
26		                    <div class="file-label"> 
27			                    <div class="file-name">${entryTitle}</div> 
28			                    <div class="file-size">${size?string["0.##"]} MB</div> 
29		                    </div> 
30		                </a> 
31 
32					</li> 
33	            </#if> 
34			</#list> 
35		</ul> 
36	</#if> 
37</section> 
38 
39<#macro getIcon type> 
40	<#switch type> 
41		<#case "image/jpeg"> 
42		<#case "image/pjpeg"> 
43		<#case "image/png"> 
44		<#case "image/gif"> 
45            <i class="fa fa-file-image-o" aria-hidden="true"></i> 
46			<#break> 
47 
48		<#case "application/pdf"> 
49            <i class="fa fa-file-pdf-o" aria-hidden="true"></i> 
50			<#break> 
51 
52		<#case "application/msword"> 
53		<#case "application/vnd.openxmlformats-officedocument.wordprocessingml.document"> 
54            <i class="fa fa-file-word-o" aria-hidden="true"></i> 
55			<#break> 
56 
57		<#case "application/excel"> 
58		<#case "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"> 
59            <i class="fa fa-file-excel-o" aria-hidden="true"></i> 
60			<#break> 
61 
62		<#case "application/mspowerpoint"> 
63		<#case "application/vnd.openxmlformats-officedocument.presentationml.presentation"> 
64            <i class="fa fa-file-powerpoint-o" aria-hidden="true"></i> 
65			<#break> 
66 
67		<#case "video/mp4"> 
68		<#case "video/quicktime"> 
69		<#case "video/x-ms-wmv"> 
70            <i class="fa fa-file-video-o" aria-hidden="true"></i> 
71			<#break> 
72 
73		<#case "audio/mpeg3"> 
74		<#case "audio/x-mpeg-3"> 
75		<#case "video/mpeg"> 
76		<#case "video/x-mpeg"> 
77		<#case "audio/wav"> 
78		<#case "audio/x-wav"> 
79            <i class="fa fa-file-audio-o" aria-hidden="true"></i> 
80			<#break> 
81 
82		<#case "text/plain"> 
83            <i class="fa fa-file-text-o" aria-hidden="true"></i> 
84			<#break> 
85 
86		<#case "application/x-compressed"> 
87		<#case "application/x-zip-compressed"> 
88		<#case "application/zip"> 
89		<#case "multipart/x-zip"> 
90            <i class="fa fa-file-archive-o" aria-hidden="true"></i> 
91			<#break> 
92 
93		<#default> 
94            <i class="fa fa-file-o" aria-hidden="true"></i> 
95	</#switch> 
96</#macro>