Can some body explain the error below.And provide solution - selenium

Question

when I try to run I get the following error:
org.openqa.selenium.SessionNotCreatedException: Unable to create new service: ChromeDriverService
Build info: version: '3.141.59', revision: 'e82be7d358', time: '2018-11-14T08:25:53'
System info: host: 'HO00060LP417', ip: '10.14.10.157', os.name: 'Windows 10', os.arch: 'x86', os.version: '10.0', java.version: '1.8.0_111'
Driver info: driver.version: unknown
Command duration or timeout: 406 milliseconds
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:422)
at org.openqa.selenium.remote.ErrorHandler.createThrowable(ErrorHandler.java:214)
at org.openqa.selenium.remote.ErrorHandler.throwIfResponseFailed(ErrorHandler.java:166)
at org.openqa.selenium.remote.JsonWireProtocolResponse.lambda$new$0(JsonWireProtocolResponse.java:53)
at org.openqa.selenium.remote.JsonWireProtocolResponse.lambda$getResponseFunction$2(JsonWireProtocolResponse.java:91)
at org.openqa.selenium.remote.ProtocolHandshake.lambda$createSession$0(ProtocolHandshake.java:122)
at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193)
at java.util.Spliterators$ArraySpliterator.tryAdvance(Spliterators.java:958)
at java.util.stream.ReferencePipeline.forEachWithCancel(ReferencePipeline.java:126)
at java.util.stream.AbstractPipeline.copyIntoWithCancel(AbstractPipeline.java:498)
at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:485)
at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471)
at java.util.stream.FindOps$FindOp.evaluateSequential(FindOps.java:152)
at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
at java.util.stream.ReferencePipeline.findFirst(ReferencePipeline.java:464)
at org.openqa.selenium.remote.ProtocolHandshake.createSession(ProtocolHandshake.java:125)
at org.openqa.selenium.remote.ProtocolHandshake.createSession(ProtocolHandshake.java:73)
at org.openqa.selenium.remote.HttpCommandExecutor.execute(HttpCommandExecutor.java:136)
at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:548)
at org.openqa.selenium.remote.RemoteWebDriver.startSession(RemoteWebDriver.java:212)
at org.openqa.selenium.remote.RemoteWebDriver.<init>(RemoteWebDriver.java:130)
at org.openqa.selenium.remote.RemoteWebDriver.<init>(RemoteWebDriver.java:143)
at com.alfains.automationsuite.testNGTest1.beforeTest(testNGTest1.java:37)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:108)
at org.testng.internal.Invoker.invokeConfigurationMethod(Invoker.java:523)
at org.testng.internal.Invoker.invokeConfigurations(Invoker.java:224)
at org.testng.internal.Invoker.invokeConfigurations(Invoker.java:146)
at org.testng.TestRunner.beforeRun(TestRunner.java:626)
at org.testng.TestRunner.run(TestRunner.java:594)
at org.testng.SuiteRunner.runTest(SuiteRunner.java:380)
at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:375)
at org.testng.SuiteRunner.privateRun(SuiteRunner.java:340)
at org.testng.SuiteRunner.run(SuiteRunner.java:289)
at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:52)
at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:86)
at org.testng.TestNG.runSuitesSequentially(TestNG.java:1301)
at org.testng.TestNG.runSuitesLocally(TestNG.java:1226)
at org.testng.TestNG.runSuites(TestNG.java:1144)
at org.testng.TestNG.run(TestNG.java:1115)
at org.testng.IDEARemoteTestNG.run(IDEARemoteTestNG.java:73)
at org.testng.RemoteTestNGStarter.main(RemoteTestNGStarter.java:123)
Caused by: org.openqa.selenium.SessionNotCreatedException: Unable to create new service: ChromeDriverService
Build info: version: '3.141.59', revision: 'e82be7d358', time: '2018-11-14T08:25:53'
System info: host: 'HO00060LP417', ip: '10.14.10.157', os.name: 'Windows 10', os.arch: 'x86', os.version: '10.0', java.version: '1.8.0_111'
Driver info: driver.version: unknown
Build info: version: '3.14.0', revision: 'aacccce0', time: '2018-08-02T20:19:58.91Z'
System info: host: 'HO00060LP417', ip: '10.14.10.157', os.name: 'Windows 10', os.arch: 'amd64', os.version: '10.0', java.version: '1.8.0_60'
Driver info: driver.version: unknown
at org.openqa.selenium.grid.session.remote.ServicedSession$Factory.lambda$get$0(ServicedSession.java:135)
at org.openqa.selenium.grid.session.remote.ServicedSession$Factory.apply(ServicedSession.java:152)
at org.openqa.selenium.remote.server.ActiveSessionFactory.lambda$apply$12(ActiveSessionFactory.java:180)
at java.util.stream.ReferencePipeline$3$1.accept(Unknown Source)
at java.util.stream.ReferencePipeline$11$1.accept(Unknown Source)
at java.util.stream.ReferencePipeline$2$1.accept(Unknown Source)
at java.util.Spliterators$ArraySpliterator.tryAdvance(Unknown Source)
at java.util.stream.ReferencePipeline.forEachWithCancel(Unknown Source)
at java.util.stream.AbstractPipeline.copyIntoWithCancel(Unknown Source)
at java.util.stream.AbstractPipeline.copyInto(Unknown Source)
at java.util.stream.AbstractPipeline.wrapAndCopyInto(Unknown Source)
at java.util.stream.FindOps$FindOp.evaluateSequential(Unknown Source)
at java.util.stream.AbstractPipeline.evaluate(Unknown Source)
at java.util.stream.ReferencePipeline.findFirst(Unknown Source)
at org.openqa.selenium.remote.server.ActiveSessionFactory.apply(ActiveSessionFactory.java:183)
at org.openqa.selenium.remote.server.NewSessionPipeline.lambda$null$2(NewSessionPipeline.java:66)
at java.util.stream.ReferencePipeline$3$1.accept(Unknown Source)
at java.util.stream.ReferencePipeline$2$1.accept(Unknown Source)
at java.util.Collections$2.tryAdvance(Unknown Source)
at java.util.stream.ReferencePipeline.forEachWithCancel(Unknown Source)
at java.util.stream.AbstractPipeline.copyIntoWithCancel(Unknown Source)
at java.util.stream.AbstractPipeline.copyInto(Unknown Source)
at java.util.stream.AbstractPipeline.wrapAndCopyInto(Unknown Source)
at java.util.stream.FindOps$FindOp.evaluateSequential(Unknown Source)
at java.util.stream.AbstractPipeline.evaluate(Unknown Source)
at java.util.stream.ReferencePipeline.findFirst(Unknown Source)
at org.openqa.selenium.remote.server.NewSessionPipeline.lambda$createNewSession$3(NewSessionPipeline.java:69)
at java.util.stream.ReferencePipeline$3$1.accept(Unknown Source)
at java.util.stream.ReferencePipeline$3$1.accept(Unknown Source)
at java.util.stream.ReferencePipeline$3$1.accept(Unknown Source)
at java.util.stream.DistinctOps$1$2.accept(Unknown Source)
at java.util.stream.ReferencePipeline$2$1.accept(Unknown Source)
at java.util.stream.ReferencePipeline$3$1.accept(Unknown Source)
at java.util.stream.ReferencePipeline$2$1.accept(Unknown Source)
at java.util.stream.Streams$StreamBuilderImpl.tryAdvance(Unknown Source)
at java.util.stream.Streams$ConcatSpliterator.tryAdvance(Unknown Source)
at java.util.stream.ReferencePipeline.forEachWithCancel(Unknown Source)
at java.util.stream.AbstractPipeline.copyIntoWithCancel(Unknown Source)
at java.util.stream.AbstractPipeline.copyInto(Unknown Source)
at java.util.stream.AbstractPipeline.wrapAndCopyInto(Unknown Source)
at java.util.stream.FindOps$FindOp.evaluateSequential(Unknown Source)
at java.util.stream.AbstractPipeline.evaluate(Unknown Source)
at java.util.stream.ReferencePipeline.findFirst(Unknown Source)
at org.openqa.selenium.remote.server.NewSessionPipeline.createNewSession(NewSessionPipeline.java:72)
at org.openqa.selenium.remote.server.commandhandler.BeginSession.execute(BeginSession.java:65)
at org.openqa.selenium.remote.server.WebDriverServlet.lambda$handle$0(WebDriverServlet.java:235)
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)

Answer 1

It says your driver version is Unknown. Probably it cannot find the chrome driver or the version of the chromedriver.exe you are using is not compatible with the version of chrome you have installed.
To start your node, you need to tell the jar where the chromedriver is on that machine. something like
java -Dwebdriver.chrome.driver="C:\Users\xxxx\Documents\Browsers\ChromeDirectory\chromedriver.exe" -jar selenium-server-standalone-3.8.1.jar -role node -hub "http://xx.xxx.xx.xxx:4444/grid/register/" -nodeConfig config.json
Try something like this in your code:
if (Utilities.Browser == "Chrome")
{
ChromeOptions options = new ChromeOptions();
options.AddArgument("disable-extension");
options.AddAdditionalCapability("useAutomationExtension", false);
if (Utilities.useSeleniumGrid == "true")
{
if (headless)
{
options.AddArgument("no-sandbox");
options.AddArgument("headless");
}
_currentWebDriver = new RemoteWebDriver(new Uri(Utilities.SeleniumHub), options.ToCapabilities(), TimeSpan.FromMinutes(3));
}
else
{
_currentWebDriver = new ChromeDriver(chromePath, options);
}
}