Exception in thread "AWT-EventQueue-0" java.lang.NoSuchMethodError: bitel.billing.module.common.Utils.getNode(Lorg/w3c/dom/Document;Ljava/lang/String;)Lorg/
        at bitel.billing.module.services.ipn.IPNServiceConfigGates.setDocument(IPNServiceConfigGates.java:227)
        at bitel.billing.module.services.ipn.IPNServiceConfigGates.setData(IPNServiceConfigGates.java:219)
        at bitel.billing.module.services.ServiceConfig.setData(ServiceConfig.java:190)
        at bitel.billing.module.services.ServiceConfig.jTabbedPane_stateChanged(ServiceConfig.java:224)
        at bitel.billing.module.services.ServiceConfig.access$1(ServiceConfig.java:217)
        at bitel.billing.module.services.ServiceConfig$1.stateChanged(ServiceConfig.java:172)
        at javax.swing.JTabbedPane.fireStateChanged(Unknown Source)
        at javax.swing.JTabbedPane$ModelListener.stateChanged(Unknown Source)
        at javax.swing.DefaultSingleSelectionModel.fireStateChanged(Unknown Source)
        at javax.swing.DefaultSingleSelectionModel.setSelectedIndex(Unknown Source)
        at javax.swing.JTabbedPane.setSelectedIndexImpl(Unknown Source)
        at javax.swing.JTabbedPane.setSelectedIndex(Unknown Source)
        at javax.swing.plaf.basic.BasicTabbedPaneUI$Handler.mousePressed(Unknown Source)
        at java.awt.Component.processMouseEvent(Unknown Source)
        at javax.swing.JComponent.processMouseEvent(Unknown Source)
        at java.awt.Component.processEvent(Unknown Source)
        at java.awt.Container.processEvent(Unknown Source)
        at java.awt.Component.dispatchEventImpl(Unknown Source)
        at java.awt.Container.dispatchEventImpl(Unknown Source)
        at java.awt.Component.dispatchEvent(Unknown Source)
        at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
        at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
        at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
        at java.awt.Container.dispatchEventImpl(Unknown Source)
        at java.awt.Window.dispatchEventImpl(Unknown Source)
        at java.awt.Component.dispatchEvent(Unknown Source)
        at java.awt.EventQueue.dispatchEvent(Unknown Source)
        at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
        at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
        at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
        at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
        at java.awt.EventDispatchThread.run(Unknown Source)