handle errors for OpenGraph image downloads

screenless/bureau/publications/publications.py

@@ -334,9 +334,13 @@ class Publications(Bureau):
                 if len(fileext) > 4:
                     fileext = ".jpg"
                 filename = tempfile.mktemp(fileext)
+                try:
                     print("fetching", entry.img, filename)
                     urllib.request.urlretrieve(entry.img, filename)
                     entry.img = "file://" + filename
+                except urllib.error.HTTPError as err:
+                    self.log.error(err)
+                    entry.img = ""
 
             return entry