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This exception has no message.
java.util.NoSuchElementException at java.util.TreeMap.key(TreeMap.java:1221) at java.util.TreeMap.firstKey(TreeMap.java:285) at org.apache.gora.memory.store.MemStore.execute(MemStore.java:122) at org.apache.nutch.util.CrawlTestUtil.readContents(CrawlTestUtil.java:112) at org.apache.nutch.crawl.TestInjector.readDb(TestInjector.java:104) at org.apache.nutch.crawl.TestInjector.testInject(TestInjector.java:62)