From c7178f0f7af1d12cdaca5d1328adba5300c7436a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sergey=20M=E2=80=A4?= <dstftw@gmail.com>
Date: Wed, 18 Nov 2020 23:31:35 +0700
Subject: [PATCH] [extractor/common] Output error for invalid URLs in
 _is_valid_url (refs #21400, refs #24151, refs #25617, refs #25618, refs
 #25586, refs #26068, refs #27072)

---
 youtube_dl/extractor/common.py | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/youtube_dl/extractor/common.py b/youtube_dl/extractor/common.py
index 021945a89..0c9089674 100644
--- a/youtube_dl/extractor/common.py
+++ b/youtube_dl/extractor/common.py
@@ -1456,9 +1456,10 @@ class InfoExtractor(object):
         try:
             self._request_webpage(url, video_id, 'Checking %s URL' % item, headers=headers)
             return True
-        except ExtractorError:
+        except ExtractorError as e:
             self.to_screen(
-                '%s: %s URL is invalid, skipping' % (video_id, item))
+                '%s: %s URL is invalid, skipping: %s'
+                % (video_id, item, error_to_compat_str(e.cause)))
             return False
 
     def http_scheme(self):