java.lang.IllegalArgumentException: Invalid document at com.rometools.rome.io.WireFeedInput.build(WireFeedInput.java:312) at com.rometools.rome.io.WireFeedInput.build(WireFeedInput.java:234) at com.rometools.rome.io.SyndFeedInput.build(SyndFeedInput.java:150) at org.briarproject.briar.feed.FeedManagerImpl.getSyndFeed(FeedManagerImpl.java:409) at org.briarproject.briar.feed.FeedManagerImpl.fetchSyndFeed(FeedManagerImpl.java:346) at org.briarproject.briar.feed.FeedManagerImpl.addFeed(FeedManagerImpl.java:166) at org.briarproject.briar.android.blog.RssFeedImportActivity$3.run(RssFeedImportActivity.java:133) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1133) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:607) at java.lang.Thread.run(Thread.java:761)