[出错了,请联系网站管理员]
freemarker.core.InvalidReferenceException: The following has evaluated to null or missing:
==> listNavs [in template "public_include/module/menu.html" at line 8, column 16]
----
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)??
----
----
FTL stack trace ("~" means nesting-related):
- Failed at: #list listNavs as item [in template "public_include/module/menu.html" at line 8, column 9]
- Reached through: #include "/public_include/module/menu... [in template "tpl/20210506/580494760607769/temp_2.html" at line 9, column 5]
- Reached through: #include "temp_2.html" [in template "tpl/20210506/580494760607769/displayproduct.html" at line 51, column 5]
----