From 8c54a3051df902ab734d76e6bd037c685e835282 Mon Sep 17 00:00:00 2001
From: pukkandan <pukkandan.ytdlp@gmail.com>
Date: Wed, 21 Apr 2021 10:37:24 +0530
Subject: [PATCH] [youtube] Bugfix in `_extract_ytcfg`

---
 yt_dlp/extractor/youtube.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/yt_dlp/extractor/youtube.py b/yt_dlp/extractor/youtube.py
index 940f3def2..eaa2db1da 100644
--- a/yt_dlp/extractor/youtube.py
+++ b/yt_dlp/extractor/youtube.py
@@ -356,6 +356,8 @@ class YoutubeBaseInfoExtractor(InfoExtractor):
         return data.get('DELEGATED_SESSION_ID')
 
     def _extract_ytcfg(self, video_id, webpage):
+        if not webpage:
+            return {}
         return self._parse_json(
             self._search_regex(
                 r'ytcfg\.set\s*\(\s*({.+?})\s*\)\s*;', webpage, 'ytcfg',