[youtube] Make category optional (#4442)

diff --git a/youtube_dl/extractor/youtube.py b/youtube_dl/extractor/youtube.py
index f8d5cdd5d6210477f5d286facfa52921dc5b4186..003aeaee6dd09ddf32759e4e2f6caf95f8ee3bd5 100644 (file)
--- a/youtube_dl/extractor/youtube.py
+++ b/youtube_dl/extractor/youtube.py
@@ -866,7 +866,7 @@ class YoutubeIE(YoutubeBaseInfoExtractor, SubtitlesInfoExtractor):
 
         m_cat_container = self._search_regex(
             r'(?s)<h4[^>]*>\s*Category\s*</h4>\s*<ul[^>]*>(.*?)</ul>',
-            video_webpage, 'categories', fatal=False)
+            video_webpage, 'categories', default=None)
         if m_cat_container:
             category = self._html_search_regex(
                 r'(?s)<a[^<]+>(.*?)</a>', m_cat_container, 'category',