Si è verificato un errore nell'elaborarazione del modello.
Failed to "?eval_json" string with this error:

---begin-message---
Empty JSON (contains no value)
Error location: At the end of text.
---end-message---

The failing expression:
==> file.data?eval_json  [in template "20116#20152#87150" at line 60, column 96]

----
FTL stack trace ("~" means nesting-related):
	- Failed at: #assign docDataJSON = file.data?eval_...  [in template "20116#20152#87150" at line 60, column 73]
----
1<#assign dlAppService = serviceLocator.findService("com.liferay.document.library.kernel.service.DLAppService") /> 
2 
3<#assign SPACE_KB = 1024 /> 
4<#assign SPACE_MB = SPACE_KB?int * 1024 /> 
5<#assign SPACE_GB = SPACE_MB?int * 1024 /> 
6<#assign SPACE_TB = SPACE_GB?int * 1024 /> 
7 
8<#assign serviceContext = staticUtil["com.liferay.portal.kernel.service.ServiceContextThreadLocal"].getServiceContext() /> 
9<#assign themeDisplay = serviceContext.getThemeDisplay() /> 
10<#assign imagesContentPath= themeDisplay.getPathThemeImages() + "/contents"/> 
11<#assign placeHolderImg = imagesContentPath + "/placeholder.jpg" /> 
12 
13<#assign downloadFlag = "?download=true" /> 
14<#assign iconDefault = "fa-file-o" /> 
15<#assign iconMap = {"PDF", "fa-file-pdf-o", 
16					 "DOC", "fa-file-word-o", 
17					 "DOCX", "fa-file-word-o", 
18					 "PPT", "fa-file-powerpoint-o", 
19					 "PPTX", "fa-file-powerpoint-o", 
20					 "XLS", "fa-file-excel-o", 
21					 "XLSX", "fa-file-excel-o", 
22					 "MP4", "fa-file-video-o", 
23					 "AVI", "fa-file-video-o", 
24					 "MOV", "fa-file-video-o", 
25					 "MP3", "fa-file-audio-o", 
26					 "ZIP", "fa-file-archive-o", 
27					 "RAR", "fa-file-archive-o"} 
28/> 
29 
30 
31<div class="container"> 
32  <div class="row"> 
33 
34    <div class="col-sm-8"> 
35		<div class="prodotto"> 
36			<h2 class="prodotto__title">${aggregatorTitle.data}</h2> 
37			<#if paragraph.getSiblings()?has_content > 
38	  			<#assign paragrpahs = paragraph.getSiblings() /> 
39	  			<#list paragrpahs as p> 
40					<#if p.paragraphTitle.data?has_content> 
41				  		<h3>${p.paragraphTitle.data}</h3> 
42					</#if> 
43					<#if p.paragraphBody.data?has_content> 
44				  		<p>${p.paragraphBody.data}</p> 
45					</#if> 
46				</#list> 
47			</#if> 
48      	</div> 
49    </div> 
50 
51	<div class="col-sm-4"> 
52		<#if documentSection?? && documentSection.getSiblings()?has_content > 
53			<#assign docSections = documentSection.getSiblings() /> 
54			<#list documentSection.getSiblings() as files> 
55				<#if files?? && files.documentTitle?? && validator.isNotNull(files.documentTitle.data)> 
56					<div> 
57						<h3>${files.documentTitle.data}</h3> 
58						<#if files.documentFile.getSiblings()?has_content> 
59							<#list files.documentFile.getSiblings() as file> 
60									<#assign docDataJSON = file.data?eval_json /> 
61									<#assign dlDocument = dlAppService.getFileEntryByUuidAndGroupId(docDataJSON.uuid,docDataJSON.groupId) /> 
62									<#assign dlDocumentSize = dlDocument.size?int /> 
63									<#assign dlDocumentURL = themeDisplay.getPortalURL() + "/documents/" + dlDocument.groupId + "/" + dlDocument.folderId + "/" + dlDocument.fileName?url('UTF-8') + "/" + dlDocument.uuid/> 
64									<#assign dlDocumentTitle = dlDocument.getTitle() /> 
65 
66									<#if dlDocumentSize lt SPACE_KB> 
67										<#assign dlDocumentSize = dlDocumentSize?round?string + " Byte" /> 
68										<#elseif dlDocumentSize lt SPACE_MB> 
69										<#assign dlDocumentSize = dlDocumentSize / SPACE_KB /> 
70										<#assign dlDocumentSize = dlDocumentSize?round?string + " KB" /> 
71										<#elseif dlDocumentSize lt SPACE_GB > 
72										<#assign dlDocumentSize = dlDocumentSize / SPACE_MB /> 
73										<#assign dlDocumentSize = dlDocumentSize?round?string + " MB" /> 
74										<#elseif dlDocumentSize lt SPACE_TB> 
75										<#assign dlDocumentSize = dlDocumentSize / SPACE_GB /> 
76										<#assign dlDocumentSize = dlDocumentSize?round?string + " GB" /> 
77										<#else> 
78										<#assign dlDocumentSize = dlDocumentSize / SPACE_TB /> 
79										<#assign dlDocumentSize = dlDocumentSize?round?string + " TB" /> 
80									</#if> 
81 
82									<div class="file has-icon"> 
83									  <#assign extension = dlDocument.extension?upper_case /> 
84									  <#if iconMap[extension]?? && iconMap[extension]?has_content > 
85									  		<#assign iconClass = iconMap[extension] /> 
86									  <#else> 
87									  		<#assign iconClass = iconDefault /> 
88									  </#if> 
89									  <i class="fa ${iconClass}" aria-hidden="true"></i> 
90									  <div class="file__name"> 
91										  <a href="${dlDocumentURL}${downloadFlag}" title="${dlDocumentTitle}" class="file__link"> 
92											  ${dlDocumentTitle?keep_before_last(".")} 
93										  </a> 
94									  </div> 
95									  <div class="file__info">(${extension} ${dlDocumentSize})</div> 
96									</div> 
97							</#list> 
98						</#if> 
99					</div> 
100				</#if> 
101			</#list> 
102		 </#if> 
103	</div> 
104</div> 
105 
106 
107 
108<#if productsSection.product.getSiblings()?has_content > 
109	<#assign products = productsSection.product.getSiblings() /> 
110	<#assign isProductsEmpty = false /> 
111	<#list products as product> 
112		<#if product.productName.data?has_content && isProductsEmpty == false> 
113			<div class="row"> 
114				<div class="col-sm-12"> 
115				  	<h2>I prodotti</h2> 
116				</div> 
117			</div> 
118			<#assign isProductsEmpty = true /> 
119		</#if> 
120	</#list> 
121 
122	<div class="placeholder-num-4"> 
123		<div class="row"> 
124			<#list products as product> 
125				<div class="col-sm-6 col-md-3"> 
126					<#if product.productName.data?has_content> 
127						<div class="placeholder clearfix"> 
128							<#if product.productImage.data?? && product.productImage.data?eval_json.url?? && product.productImage.data?eval_json.url?has_content > 
129								<#assign imgSrc = product.productImage.data?eval_json.url /> 
130								<#if product.productImage.getAttribute("alt")?? && product.productImage.getAttribute("alt")?has_content > 
131									<#assign imgAlt = product.productImage.getAttribute("alt")/> 
132								<#else> 
133									<#assign imgAlt = product.productName.data /> 
134								</#if> 
135 
136							<#else> 
137								<#assign imgSrc = placeHolderImg /> 
138								<#assign imgAlt = "placeholder.jpg" /> 
139 
140							</#if> 
141							<#if product.productFile.data?? && product.productFile.data?eval_json.url?? && product.productFile.data?eval_json.url?has_content> 
142								<#assign link = product.productFile.data?eval_json.url /> 
143							<#else> 
144								<#assign link = "#" /> 
145							</#if> 
146 
147							<a href="${link}${downloadFlag}" title="${product.productName.data}" class="placeholder__link"> 
148							  <img src="${imgSrc}" alt="${imgAlt}" class="placeholder__img" /> 
149							  <#if product.productName.data?? && product.productName.data?has_content> 
150								<span class="placeholder__title">${product.productName.data}</span> 
151							  </#if> 
152							</a> 
153					    </div> 
154					</#if> 
155				</div> 
156				<#if product?index %2 !=0> 
157					<div class="clearfix visible-sm-block"></div> 
158				</#if> 
159		</#list> 
160		</div> 
161	</div> 
162</#if> 
163</div>