Special Messages - AO Trips

An error occurred while processing the template.

Can't convert this string to number: ""
The blamed expression:
==> classPK?number  [in template "20101#20128#165910" at line 41, column 67]

----
FTL stack trace ("~" means nesting-related):
	- Failed at: article = JournalArticleLocalService...  [in template "20101#20128#165910" at line 41, column 13]
----

1<#assign

2    serviceContext = staticUtil["com.liferay.portal.kernel.service.ServiceContextThreadLocal"].getServiceContext()

3    themeDisplay = serviceContext.getThemeDisplay()

4    group_id = themeDisplay.getScopeGroupId()

5    JournalArticleLocalService = serviceLocator.findService("com.liferay.journal.service.JournalArticleLocalService")

6>

8<div class="ao-content ao-hide">

9    <#assign

10        classPK = AOWebContent.getData()?keep_after("classPK\":\"")?keep_before("\"")

11        article = JournalArticleLocalService.getLatestArticle(classPK?number)

12        article_id = article.articleId

13        article_content = JournalArticleLocalService.getArticleContent(group_id, article_id, "VIEW", locale.toString(), null, null, themeDisplay)

14    >

15    ${article_content}

16</div>

17<div class="acic-content ao-hide">

18    <#assign

19        classPK = ACICWebContent.getData()?keep_after("classPK\":\"")?keep_before("\"")

20        article = JournalArticleLocalService.getLatestArticle(classPK?number)

21        article_id = article.articleId

22        article_content = JournalArticleLocalService.getArticleContent(group_id, article_id, "VIEW", locale.toString(), null, null, themeDisplay)

23    >

24    ${article_content}

25</div>

26<div class="concord-content ao-hide">

27    <#if ConcordWebContent?has_content>

28        <#assign

29            classPK = ConcordWebContent.getData()?keep_after("classPK\":\"")?keep_before("\"")

30            article = JournalArticleLocalService.getLatestArticle(classPK?number)

31            article_id = article.articleId

32            article_content = JournalArticleLocalService.getArticleContent(group_id, article_id, "VIEW", locale.toString(), null, null, themeDisplay)

33        >

34        ${article_content}

35    </#if>

36</div>

37<div class="capital-content ao-hide">

38<#if CapitalWebContent?has_content>

39        <#assign

40            classPK = CapitalWebContent.getData()?keep_after("classPK\":\"")?keep_before("\"")

41            article = JournalArticleLocalService.getLatestArticle(classPK?number)

42            article_id = article.articleId

43            article_content = JournalArticleLocalService.getArticleContent(group_id, article_id, "VIEW", locale.toString(), null, null, themeDisplay)

44        >

45        ${article_content}

46<#else>

47missing

48</#if>

50</div>