From 811fe097ad01dd36b4061656ff12bd0881f2a049 Mon Sep 17 00:00:00 2001
From: Lawrence Liu <smartlitchi@gmail.com>
Date: Wed, 20 Sep 2023 14:52:14 +0800
Subject: [PATCH] Fix error during process of 404 file without locale

---
 index.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/index.js b/index.js
index 31570b0..a3b54a6 100644
--- a/index.js
+++ b/index.js
@@ -74,7 +74,7 @@ module.exports = (options, context) => {
 
         let links = []
         if (relatedLocales.length > 1) {
-          links = relatedLocales.map(localePrefix => {
+          links = relatedLocales.filter(localePrefix => localePrefix != null).map(localePrefix => {
             return {
               lang: locales[localePrefix].lang,
               url: withBase(normalizedPath.replace('/', localePrefix))