KeyError: 'last-modified' about humblebundle-downloader HOT 2 CLOSED

                if cache_file_info != {} and self.update is not True:
                    # Do not care about checking for updates at this time
                    continue

                try:
                    product_r = self.session.get(url, stream=True)
                except Exception:
                    logger.error("Failed to download {url}".format(url=url))
                    continue

                # Added by Derek
                if product_r.status_code != 200:
                    continue
                # End Add

                logger.debug("Item request: {product_r}, Url: {url}"
                             .format(product_r=product_r, url=url))
                file_info = {
                    'url_last_modified': product_r.headers['Last-Modified'],
                }