您的当前位置： 首页 FreeMarker template error (DEBUG mode; use RETHROW in production!): The following has evaluated to null or missing: ==> categoryNow.parents [in template "themes/57/list/templ/list_data.ftl" at line 12, column 28] ---- Tip: It's the step after the last dot that caused this error, not those before it. ---- 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. (These only cover the last step of the expression; to cover the whole expression, use parenthesis: (myOptionalVar.foo)!myDefault, (myOptionalVar.foo)?? ---- ---- FTL stack trace ("~" means nesting-related): - Failed at: #list categoryNow.parents as nv [in template "themes/57/list/templ/list_data.ftl" at line 12, column 21] ---- Java stack trace (for programmers): ---- freemarker.core.InvalidReferenceException: [... Exception message was already printed; see it above ...] at freemarker.core.InvalidReferenceException.getInstance(InvalidReferenceException.java:134) at freemarker.core.Expression.assertNonNull(Expression.java:233) at freemarker.core.IteratorBlock.acceptWithResult(IteratorBlock.java:103) at freemarker.core.IteratorBlock.accept(IteratorBlock.java:93) at freemarker.core.Environment.visit(Environment.java:330) at freemarker.core.Environment.visit(Environment.java:336) at freemarker.core.Environment.visit(Environment.java:336) at freemarker.core.Environment.process(Environment.java:309) at freemarker.template.Template.process(Template.java:384) at com.shiyuesoft.microservice.cms.utils.FreemarkerUtil.createHtmlFile(FreemarkerUtil.java:40) at com.shiyuesoft.microservice.cms.utils.FreemarkerUtil.createFtlToOtherFile(FreemarkerUtil.java:24) at com.shiyuesoft.microservice.cms.utils.SiteLIstHtmlUtill.run(SiteLIstHtmlUtill.java:471) at java.lang.Thread.run(Unknown Source)