Unable to find free port

I downloaded Katalon studio and tried to get it working. I am using the record mode to capture the user clicks.

After starting and creating the test case, when I click on record, I get a pop-up. In that when I give URL and click record with chrome or firefox, I get an error unable to find a free port. I have the utility installed in chrome but still not working.

Is there any way to find which port it’s trying to use or specify any other port to use??

 

I´m having the same problem. It is very troubling that no one cared to answer OP´s question. Makes me want to not use Katalon if there is such poor support for it. In case anyone cares, this is what my log files say (i think it is the same problem OP is having):

MultiException[java.net.BindException: Address already in use: bind, java.net.BindException: Address already in use: bind]
at org.eclipse.jetty.server.Server.doStart(Server.java:353)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)
at com.kms.katalon.objectspy.websocket.AddonSocketServer.start(AddonSocketServer.java:62)
at com.kms.katalon.composer.webui.recorder.dialog.RecorderDialog$1.run(RecorderDialog.java:266)
at org.eclipse.jface.operation.ModalContext$ModalContextThread.run(ModalContext.java:119)
Suppressed: java.net.BindException: Address already in use: bind
at sun.nio.ch.Net.bind0(Native Method)
at sun.nio.ch.Net.bind(Net.java:433)
at sun.nio.ch.Net.bind(Net.java:425)
at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:223)
at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:74)
at org.eclipse.jetty.server.ServerConnector.open(ServerConnector.java:317)
at org.eclipse.jetty.server.AbstractNetworkConnector.doStart(AbstractNetworkConnector.java:80)
at org.eclipse.jetty.server.ServerConnector.doStart(ServerConnector.java:235)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)
at org.eclipse.jetty.server.Server.doStart(Server.java:390)
… 4 more
Caused by: java.net.BindException: Address already in use: bind
at sun.nio.ch.Net.bind0(Native Method)
at sun.nio.ch.Net.bind(Net.java:433)
at sun.nio.ch.Net.bind(Net.java:425)
at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:223)
at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:74)
at org.eclipse.jetty.server.ServerConnector.open(ServerConnector.java:317)
at org.eclipse.jetty.server.AbstractNetworkConnector.doStart(AbstractNetworkConnector.java:80)
at org.eclipse.jetty.server.ServerConnector.doStart(ServerConnector.java:235)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)
at org.eclipse.jetty.server.Server.doStart(Server.java:390)
… 4 more
Warning: NLS unused message: HAND_INSTANT_BROWSERS_DIA_MESSAGE in: com.kms.katalon.objectspy.constants.objectspyMessages
Warning: NLS unused message: HAND_INSTANT_BROWSERS_DIA_TITLE in: com.kms.katalon.objectspy.constants.objectspyMessages
Warning: NLS unused message: INSTANT_BROWSER_PREFIX in: com.kms.katalon.objectspy.constants.objectspyMessages
Warning: NLS unused message: MENU_ITEM_INSTANT_BROWSERS in: com.kms.katalon.objectspy.constants.objectspyMessages
Warning: NLS unused message: PREF_LBL_INSTANT_BROWSER_PORT in: com.kms.katalon.objectspy.constants.objectspyMessages
Warning: NLS unused message: PREF_LBL_INSTANT_BROWSER_PORT_DO_NOT_SHOW_WARNING_DIALOG in: com.kms.katalon.objectspy.constants.objectspyMessages
Mär 02, 2018 9:31:00 AM org.openqa.selenium.remote.ProtocolHandshake createSession
INFORMATION: Detected dialect: W3C

!ENTRY org.eclipse.e4.ui.workbench 4 0 2018-03-02 09:31:01.301
!MESSAGE
!STACK 0
java.lang.NullPointerException
at com.kms.katalon.composer.webui.recorder.core.RecordSession.handleForFirefoxAddon(RecordSession.java:73)
at com.kms.katalon.objectspy.core.InspectSession.runSeleniumWebDriver(InspectSession.java:187)
at com.kms.katalon.objectspy.core.InspectSession.run(InspectSession.java:152)
at java.lang.Thread.run(Thread.java:745)
Mär 02, 2018 9:31:02 AM org.openqa.selenium.remote.ProtocolHandshake createSession
INFORMATION: Detected dialect: W3C

!ENTRY org.eclipse.e4.ui.workbench 4 0 2018-03-02 09:31:16.241
!MESSAGE
!STACK 0
java.lang.NullPointerException
at com.kms.katalon.composer.webui.recorder.core.RecordSession.handleForFirefoxAddon(RecordSession.java:73)
at com.kms.katalon.objectspy.core.InspectSession.runSeleniumWebDriver(InspectSession.java:187)
at com.kms.katalon.objectspy.core.InspectSession.run(InspectSession.java:152)
at java.lang.Thread.run(Thread.java:745)

!ENTRY org.eclipse.core.resources 2 10035 2018-03-02 09:31:24.796
!MESSAGE The workspace will exit with unsaved changes in this session.

Just in case someone else is having this Problem. This was the answer for me: