From 682105b8eecc08ec173e30256e6167bf436b4950 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Mike=20F=C3=A4hrmann?= <mike_faehrmann@web.de>
Date: Sat, 31 Aug 2019 21:58:33 +0200
Subject: [PATCH] prevent crash when loading unavailable downloader (#405)

---
 gallery_dl/job.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gallery_dl/job.py b/gallery_dl/job.py
index 6d81e662..b6b5a6f5 100644
--- a/gallery_dl/job.py
+++ b/gallery_dl/job.py
@@ -297,7 +297,7 @@ class DownloadJob(Job):
             instance = None
             self.log.error("'%s:' URLs are not supported/enabled", scheme)
 
-        if klass.scheme == "http":
+        if klass and klass.scheme == "http":
             self.downloaders["http"] = self.downloaders["https"] = instance
         else:
             self.downloaders[scheme] = instance