java.net.BindException: Selenium is already running on port 4444. Or some other service is.
   at org.openqa.selenium.server.SeleniumServer.start(SeleniumServer.java:402)
Caused: java.lang.reflect.InvocationTargetException
   at sun.reflect.NativeMethodAccessorImpl.invoke0(NativeMethodAccessorImpl.java:0)
   at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
   at java.lang.reflect.Method.invoke(Method.java:601)
   at org.netbeans.modules.selenium.server.SeleniumServerRunner.callSeleniumServerMethod(SeleniumServerRunner.java:166)
   at org.netbeans.modules.selenium.server.SeleniumServerRunner.run(SeleniumServerRunner.java:118)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1411)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:1991)