Pligg Support - Error when submiting sitemap for Google Webmasters This tag is missing the required attribute. Please add it and resubmit. I'm getting this error when submiting my rss ( for Google webmasters. If there is 20 URLs, I get 20 errors. How can I solve it? (Im using pligg 2 with rss importer 2) Fri, 26 Jul 2013 15:07:31 UTC en