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java.lang.NullPointerException: 	at$ Source)	at$PeekInputStream.readFully(Unknown Source)	at$BlockDataInputStream.readShort(Unknown Source)	at Source)	at Source)	at net.sf.jasperreports.engine.util.ContextClassLoaderObjectInputStream.(	at net.sf.jasperreports.engine.util.JRLoader.loadObject(	at net.sf.jasperreports.engine.JasperFillManager.fillReport(	at Util.ReportUtils.openReport(	at Telas.TRelPedido.btnGerarActionPerformed(	at Telas.TRelPedido.access$200(	at Telas.TRelPedido$3.actionPerformed(