Unable to subscribe to change data capture event due to timeout error - salesforce

Question

I am trying to consume Salesforce Change data capture events. I am following this article :https://trailhead.salesforce.com/content/learn/modules/change-data-capture/subscribe-to-events
I have followed following steps:
To get a local copy of the EMP-Connector GitHub repository:
$ git clone https://github.com/forcedotcom/EMP-Connector.git
To build the EMP-Connector tool:
$ cd EMP-Connector
$ mvn clean package
The mvn command generates JAR files in the target folder in the EMP-Connector project directory.
The generated JAR file, target/emp-connector-0.0.1-SNAPSHOT-phat.jar, includes the connector and the LoginExample functionality. The JAR contains all the dependencies for the connector, so you don’t have to download them separately.
To run EMP Connector against your Developer Edition or Trailhead Playground org,
type this command and supply your Trailhead Playground org or Salesforce org login credentials and the channel to subscribe to. In this example, the channel is /data/Employee__ChangeEvent.
$ java -jar target/emp-connector-0.0.1-SNAPSHOT-phat.jar <username> <password> /data/Employee__ChangeEvent
After last step, I am getting following error:
SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.
java.util.concurrent.ExecutionException: java.net.SocketTimeoutException: Connect Timeout
at org.eclipse.jetty.client.util.FutureResponseListener.getResult(FutureResponseListener.java:118)
at org.eclipse.jetty.client.util.FutureResponseListener.get(FutureResponseListener.java:101)
at org.eclipse.jetty.client.HttpRequest.send(HttpRequest.java:683)
at com.salesforce.emp.connector.LoginHelper.login(LoginHelper.java:124)
at com.salesforce.emp.connector.LoginHelper.login(LoginHelper.java:100)
at com.salesforce.emp.connector.LoginHelper.login(LoginHelper.java:92)
at com.salesforce.emp.connector.example.LoginExample.lambda$main$0(LoginExample.java:48)
at com.salesforce.emp.connector.example.BearerTokenProvider.login(BearerTokenProvider.java:24)
at com.salesforce.emp.connector.example.LoginExample.main(LoginExample.java:56)
Caused by: java.net.SocketTimeoutException: Connect Timeout
at org.eclipse.jetty.io.ManagedSelector$Connect.run(ManagedSelector.java:801)
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(Unknown Source)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.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)
I see a similar issue is opened on github page https://github.com/forcedotcom/EMP-Connector/issues/99
Please provide suggestion to fix this issue