FIX: Don't fail seed if avatar can't be downloaded

plugins/discourse-narrative-bot/db/fixtures/001_discobot.rb

@@ -18,11 +18,15 @@ if !user
 
   # TODO Pull the user avatar from that thread for now. In the future, pull it from a local file or from some central discobot repo.
   if !Rails.env.test?
+    begin
       UserAvatar.import_url_for_user(
         "https://cdn.discourse.org/dev/uploads/default/original/2X/e/edb63d57a720838a7ce6a68f02ba4618787f2299.png",
         User.find(-2),
         override_gravatar: true
       )
+    rescue
+      # In case the avatar can't be downloaded, don't fail seed
+    end
   end
 end