From 62e6e5c259d6d85c705a1fe7f1e13b139bdd64d6 Mon Sep 17 00:00:00 2001
From: curbengh <43627182+curbengh@users.noreply.github.com>
Date: Wed, 25 Sep 2019 07:13:50 +0100
Subject: [PATCH] fix(open_graph): url might be null

---
 lib/plugins/helper/open_graph.js | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/lib/plugins/helper/open_graph.js b/lib/plugins/helper/open_graph.js
index 54e134dd17..8fd03f8394 100644
--- a/lib/plugins/helper/open_graph.js
+++ b/lib/plugins/helper/open_graph.js
@@ -78,11 +78,12 @@ function openGraphHelper(options = {}) {
   result += og('og:type', type);
   result += og('og:title', title);
 
-  if (config.pretty_urls.trailing_index === false) {
-    url = url.replace(/index\.html$/, '');
+  if (url) {
+    if (config.pretty_urls.trailing_index === false) {
+      url = url.replace(/index\.html$/, '');
+    }
+    url = encodeURL(url);
   }
-
-  if (url) url = encodeURL(url);
   result += og('og:url', url);
 
   result += og('og:site_name', siteName);