Trying to set up analysis-icu plugin getting exception message

hi . l am trying to set up analysis-icu plugin getting below exception message
what should l do?

C:\Program Files\Elasticsearch\bin>elasticsearch-plugin install analysis-icu

Exception in thread "main" java.net.ConnectException: Connection timed out: conn
ect
at java.net.DualStackPlainSocketImpl.connect0(Native Method)
at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketI
mpl.java:79)
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.ja
va:350)
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocket
Impl.java:206)
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java
:188)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
at java.net.Socket.connect(Socket.java:589)
at sun.security.ssl.SSLSocketImpl.connect(SSLSocketImpl.java:673)
at sun.security.ssl.BaseSSLSocketImpl.connect(BaseSSLSocketImpl.java:173
)
at sun.net.NetworkClient.doConnect(NetworkClient.java:180)
at sun.net.www.http.HttpClient.openServer(HttpClient.java:463)
at sun.net.www.http.HttpClient.openServer(HttpClient.java:558)
at sun.net.www.protocol.https.HttpsClient.(HttpsClient.java:264)
at sun.net.www.protocol.https.HttpsClient.New(HttpsClient.java:367)
at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.getNewH
ttpClient(AbstractDelegateHttpsURLConnection.java:191)
at sun.net.www.protocol.http.HttpURLConnection.plainConnect0(HttpURLConn
ection.java:1156)
at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConne
ction.java:1050)
at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect
(AbstractDelegateHttpsURLConnection.java:177)
at sun.net.www.protocol.https.HttpsURLConnectionImpl.connect(HttpsURLCon
nectionImpl.java:162)
at org.elasticsearch.plugins.InstallPluginCommand.urlExists(InstallPlugi
nCommand.java:306)
at org.elasticsearch.plugins.InstallPluginCommand.getElasticUrl(InstallP
luginCommand.java:273)
at org.elasticsearch.plugins.InstallPluginCommand.download(InstallPlugin
Command.java:229)
at org.elasticsearch.plugins.InstallPluginCommand.execute(InstallPluginC
ommand.java:221)
at org.elasticsearch.plugins.InstallPluginCommand.execute(InstallPluginC
ommand.java:212)
at org.elasticsearch.cli.EnvironmentAwareCommand.execute(EnvironmentAwar
eCommand.java:86)
at org.elasticsearch.cli.Command.mainWithoutErrorHandling(Command.java:1
24)
at org.elasticsearch.cli.MultiCommand.execute(MultiCommand.java:75)
at org.elasticsearch.cli.Command.mainWithoutErrorHandling(Command.java:1
24)
at org.elasticsearch.cli.Command.main(Command.java:90)
at org.elasticsearch.plugins.PluginCli.main(PluginCli.java:48)

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