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Si è verificato un errore nell'elaborarazione del modello.
The following has evaluated to null or missing:
==> DLFileEntryLocalService.fetchDLFileEntry(334006)  [in template "20097#20123#1747913" at line 2, column 17]

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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 file = DLFileEntryLocalServic...  [in template "20097#20123#1747913" at line 2, column 1]
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1<#assign DLFileEntryLocalService = serviceLocator.findService("com.liferay.document.library.kernel.service.DLFileEntryLocalService")> 
2<#assign file = DLFileEntryLocalService.fetchDLFileEntry(334006)> 
3<#if file??> 
4    Nome file: ${file.getTitle()}<br> 
5    FolderId: ${file.getFolderId()}<br> 
6<#else> 
7    Nessun file trovato con ID 334006 
8</#if>