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java.net.ConnectException: Connection refused: connect	at java.net.PlainSocketImpl.socketConnect(Native Method)	at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333)	at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:195)	at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:182)	at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366)	at java.net.Socket.connect(Socket.java:519)	at java.net.Socket.connect(Socket.java:469)	at java.net.Socket.init(Socket.java:366)	at java.net.Socket.init(Socket.java:180)	at oracle.oats.scripting.modules.basic.common.api.helperService.HelperServiceConnector.startConnection(HelperServiceConnector.java:83)	at oracle.oats.scripting.modules.basic.common.api.helperService.HelperServiceConnector.getConnection(HelperServiceConnector.java:59)	at oracle.oats.scripting.modules.webdom.api.internal.InternalWebDOMService.onAfterLaunch(InternalWebDOMService.java:830)	at oracle.oats.scripting.modules.browser.api.BrowserService.onAfterLaunch(BrowserService.java:201)	at oracle.oats.scripting.modules.browser.api.BrowserService.launch(BrowserService.java:119)	at script.initialize(script.java:17)	at oracle.oats.scripting.modules.basic.api.IteratingVUser.initialize(IteratingVUser.java:350)	at oracle.oats.scripting.modules.basic.api.internal.IteratingAgent.run(IteratingAgent.java:579)	at java.lang.Thread.run(Thread.java:619)