FIX: If there is an invalid URI in the import, don't throw an error

app/models/topic_embed.rb

@@ -76,12 +76,16 @@ class TopicEmbed < ActiveRecord::Base
       url_param = tags[node.name]
       src = node[url_param]
       unless (src.empty?)
+        begin
           uri = URI.parse(src)
           unless uri.host
             uri.scheme = original_uri.scheme
             uri.host = original_uri.host
             node[url_param] = uri.to_s
           end
+        rescue URI::InvalidURIError
+          # If there is a mistyped URL, just do nothing
+        end
       end
     end