windows recorder always failure

and why the ip 172.21.11.21 ?
Root exception:
java.util.concurrent.ExecutionException: org.openqa.selenium.WebDriverException: Connection refused: connect
Build info: version: ‘3.141.59’, revision: ‘e82be7d358’, time: ‘2018-11-14T08:25:53’
System info: host: ‘DESKTOP-R7DNR4R’, ip: ‘172.21.11.21’, os.name: ‘Windows 10’, os.arch: ‘amd64’, os.version: ‘10.0’, java.version: ‘1.8.0_282’
Driver info: driver.version: WindowsDriver
at java.util.concurrent.FutureTask.report(FutureTask.java:122)
at java.util.concurrent.FutureTask.get(FutureTask.java:192)
at com.kms.katalon.composer.components.impl.dialogs.ProgressMonitorDialogWithThread.runAndWait(ProgressMonitorDialogWithThread.java:49)
at com.kms.katalon.composer.windows.dialog.WindowsAppComposite$5.run(WindowsAppComposite.java:243)
at org.eclipse.jface.operation.ModalContext$ModalContextThread.run(ModalContext.java:122)
Caused by: org.openqa.selenium.WebDriverException: Connection refused: connect
Build info: version: ‘3.141.59’, revision: ‘e82be7d358’, time: ‘2018-11-14T08:25:53’
System info: host: ‘DESKTOP-R7DNR4R’, ip: ‘172.21.11.21’, os.name: ‘Windows 10’, os.arch: ‘amd64’, os.version: ‘10.0’, java.version: ‘1.8.0_282’
Driver info: driver.version: WindowsDriver