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错误信息: FM-parse-error:The following has evaluated to null or missing: ==> manager.translateValue(data) [in template "common.ftl" at line 44, column 25] ---- 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: #assign doc = manager.translateValue(... [in template "common.ftl" in macro "getArticleXML" at line 44, column 9] - Reached through: @common.getArticleXML common.Long.val... [in template "t.ftl" at line 337, column 1] ----