Webchat not working after update from 4.1.4 to 4.1.5

Yes, there is an issue loading Fastpath Webchat plugin in Openfire >= 4.1.5 .
Environment:

  • Windows 10
  • jdk1.8.0_144
  • Openfire >= 4.1.5
  • Fastpath Webchat 4.0.0

I’ve loaded .war in 4.1.4 and it works, not in 4.1.5 nor 4.1.6
Loading error message reminds me Websocket plugin install failed

It throws that on clear installation:

2017.10.06 21:37:38 org.jivesoftware.openfire.container.PluginManager - An exception occurred while loading plugin ‘webchat’:
java.lang.NoSuchMethodError: org.jivesoftware.openfire.http.HttpBindManager.getContexts()Lorg/eclipse/jetty/server/handler/ContextHandlerCollection;
at org.jivesoftware.liveassistant.WebClientPlugin.initializePlugin(WebClientPlugin.java:63)
at org.jivesoftware.openfire.container.PluginManager.loadPlugin(PluginManager.java:415)
at org.jivesoftware.openfire.container.PluginMonitor$MonitorTask$4.call(PluginMonitor.java:276)
at org.jivesoftware.openfire.container.PluginMonitor$MonitorTask$4.call(PluginMonitor.java:264)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)