アセットパブリッシャー

テンプレート処理中にエラーが発生しました。
The following has evaluated to null or missing:
==> .vars['reserved-article-display-date']  [in template "20101#20127#399640" at line 1, column 31]

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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 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 articleDisplayDate = .vars["r...  [in template "20101#20127#399640" at line 1, column 1]
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1<#assign articleDisplayDate = .vars['reserved-article-display-date'].data /> 
2<#assign originalLocale = locale> 
3<#setting locale = 'en_US'> 
4<#assign date = articleDisplayDate?date("EEE, dd MMM yyyy hh:mm:ss zzz")> 
5<#assign dateTimeFormat = languageUtil.get(originalLocale, "MMM dd, yyyy")> 
6<#assign date = date?string(dateTimeFormat)> 
7 
8<#assign  
9 
10    newsContent = Content.getData() 
11    newsTitle = .vars['reserved-article-title'].data 
12     
13    folderIconPath = "/documents/109702/122888" 
14 
15/> 
16 
17<style> 
18 
19#app-content .portlet-content-container .asset-full-content .asset-details { 
20    display:none; 
21
22 
23#app-content div.portlet-asset-publisher:nth-child(1) .section.article { 
24    padding-bottom : 0 !important; 
25
26 
27#app-content div.portlet-asset-publisher:nth-child(2) .section { 
28    padding-top : 0; 
29
30 
31</style> 
32 
33<section class="section article"> 
34      <div class="container"> 
35        <div class="row justify-content-center"> 
36            <div class="col-md-8"> 
37                <h6 class="article__category"><a href="/news">News</a></h6> 
38                <h1 class="article__title">${newsTitle}</h1> 
39                <time class="article__time">${date}</time> 
40                 
41                <div class="article__content"> 
42                    <div class="text-justify"> 
43                        ${newsContent} 
44                    </div> 
45                     
46 
47                    <div class="text-center"> 
48                        <p class="mb-2"><strong>Share</strong></p> 
49                        <ul class="article__share mt-2"> 
50                            <li onclick=""> 
51                                <a href="#" class="link-fb"> 
52                                    <!--<img src="${folderIconPath}/fb.png" alt=""> --> 
53                                    <i class="fa fa-facebook" aria-hidden="true"></i> 
54                                </a> 
55                            </li> 
56                            <li onclick=""> 
57                                <a href="#" class="link-twitter"> 
58                                    <!--<img src="${folderIconPath}/twitter.png" alt=""> --> 
59                                    <i class="fa fa-twitter" aria-hidden="true"></i> 
60                                </a> 
61                            </li> 
62                            <li onclick=""> 
63                                <a href="#" class="link-linkedin"> 
64                                    <!--<img src="${folderIconPath}/linkedin.png" alt=""> --> 
65                                    <i class="fa fa-linkedin" aria-hidden="true"></i> 
66                                </a> 
67                            </li> 
68                        </ul> 
69                    </div> 
70                </div> 
71            </div> 
72        </div> 
73        <h2 class="r-line b-title mt-5">Related News</h2> 
74      </div> 
75  </section> 
76  
77<script type="text/javascript"> 
78    $(document).ready(function() { 
79        $('.link-fb').parent().attr("onclick", $('.taglib-social-bookmark-facebook').attr("onclick")); 
80        $('.link-twitter').parent().attr("onclick", $('.taglib-social-bookmark-twitter').attr("onclick")); 
81        $('.link-linkedin').parent().attr("onclick", $('.taglib-social-bookmark-linkedin').attr("onclick")); 
82        $('.link-fb').attr("href", $('.taglib-social-bookmark-facebook a').attr("href")); 
83        $('.link-twitter').attr("href", $('.taglib-social-bookmark-twitter a').attr("href")); 
84        $('.link-linkedin').attr("href", $('.taglib-social-bookmark-linkedin a').attr("href")); 
85    }); 
86</script>