java -jar jenkins-plugin-manager-2.12.3.jar --verbose --war /USR/jenkinsi/releases/jenkins/jenkins-LTS-2.332.1.war --jenkins-version 2.332.1 -d /VAR/jenkinsi/jenkins/plugins --plugins nested-view:1.19.2 deployit-plugin
No .txt or .yaml file containing list of plugins to be downloaded entered.
Plugin download location: /VAR/jenkinsi/jenkins/plugins
No CLI option or environment variable set for update center, using default of https://updates.jenkins.io/update-center.json
No CLI option or environment variable set for experimental update center, using default of https://updates.jenkins.io/experimental/update-center.json
No CLI option or environment variable set for incrementals mirror, using default of https://repo.jenkins-ci.org/incrementals
No CLI option or environment variable set for plugin info, using default of https://updates.jenkins.io/plugin-versions.json
Will use war file: /USR/jenkinsi/releases/jenkins/jenkins-LTS-2.332.1.war

Retrieving update center information
Update center URL: https://updates.jenkins.io/update-center.json?version=2.332.1
Cache miss for: update-center-2.332.1
io.jenkins.tools.pluginmanager.impl.UpdateCenterInfoRetrievalException: Error getting update center json
 at io.jenkins.tools.pluginmanager.impl.PluginManager.getJson(PluginManager.java:792)
 at io.jenkins.tools.pluginmanager.impl.PluginManager.getUCJson(PluginManager.java:814)
 at io.jenkins.tools.pluginmanager.impl.PluginManager.start(PluginManager.java:208)
 at io.jenkins.tools.pluginmanager.impl.PluginManager.start(PluginManager.java:172)
 at io.jenkins.tools.pluginmanager.cli.Main.main(Main.java:70)
Caused by: java.net.ConnectException: Connection timed out (Connection timed out)
 at java.net.PlainSocketImpl.socketConnect(Native Method)
 at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)
 at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
 at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
 at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
 at java.net.Socket.connect(Socket.java:607)
 at sun.security.ssl.SSLSocketImpl.connect(SSLSocketImpl.java:284)
 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.<init>(HttpsClient.java:264)
 at sun.net.www.protocol.https.HttpsClient.New(HttpsClient.java:367)
 at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.getNewHttpClient(AbstractDelegateHttpsURLConnection.java:191)
 at sun.net.www.protocol.http.HttpURLConnection.plainConnect0(HttpURLConnection.java:1162)
 at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:1056)
 at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:177)
 at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1570)
 at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1498)
 at sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(HttpsURLConnectionImpl.java:268)
 at java.net.URL.openStream(URL.java:1068)
 at org.apache.commons.io.IOUtils.toString(IOUtils.java:2953)
 at io.jenkins.tools.pluginmanager.impl.PluginManager.getJson(PluginManager.java:786)
 ... 4 more
Error getting update center json