بنية FreeMarker غير صالح.

Java method "jdk.proxy3.$Proxy108.getCategory(long)" threw an exception when invoked on jdk.proxy3.$Proxy108 object "com.liferay.asset.categories.internal.service.AssetCategoryPropertyAssetCategoryLocalServiceWrapper@78cdc798"; see cause exception in the Java stack trace.

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FTL stack trace ("~" means nesting-related):
- Failed at: #assign category = assetCategoryLocal... [in template "template_id" at line 11, column 5]
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