fix-build

themes/hexo/components/MenuListSide.js

@@ -23,6 +23,11 @@ export const MenuListSide = (props) => {
   if (BLOG.CUSTOM_MENU) {
     links = customMenu
   }
+
+  if (!links || links.length === 0) {
+    return null
+  }
+
   return (
         <nav>
             {/* {links.map(link => <MenuItemNormal key={link.id} link={link} />)} */}