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ava.lang.NullPointerException: 	at com.mysql.jdbc.Statement.getGeneratedKeysInternal(Statement.java:347)	at com.mysql.jdbc.Statement.getGeneratedKeys(Statement.java:329)	at com.mysql.jdbc.PreparedStatement.getGeneratedKeys(PreparedStatement.java:663)	at newsleecher.workers.jdbc.SaveNewGroupsWorker.save(SaveNewGroupsWorker.java:85)	at newsleecher.workers.jdbc.SaveNewGroupsWorker.access$000(SaveNewGroupsWorker.java:20)	at newsleecher.workers.jdbc.SaveNewGroupsWorker$1.consumeBuffer(SaveNewGroupsWorker.java:51)	at newsleecher.util.QueueConsumer.consumeQueue(QueueConsumer.java:53)	at newsleecher.workers.jdbc.SaveNewGroupsWorker._runJdbc(SaveNewGroupsWorker.java:58)	at newsleecher.workers.jdbc.AbstractJDBCNewsLeecherWorker._run(AbstractJDBCNewsLeecherWorker.java:44)	at newsleecher.workers.AbstractWorker.run(AbstractWorker.java:74)	at newsleecher.ui.dispatch.Dispatcher.run(Dispatcher.java:50)	at java.lang.Thread.run(Thread.java:595)