2019-08-02 05:48:24.412 [ResultsListener-socketReadThread-2]  SocketThread$ResultsListener.run()  WARNING: Protocol execution exception.
java.lang.NullPointerException
	at tigase.io.JcaTLSWrapper.[init](JcaTLSWrapper.java:73)
	at tigase.io.SSLContextContainer.createIoInterface(SSLContextContainer.java:171)
	at tigase.net.IOService.startTLS(IOService.java:395)
	at tigase.server.xmppserver.proc.StartTLS.process(StartTLS.java:69)
	at tigase.server.xmppserver.S2SConnectionManager.processSocketData(S2SConnectionManager.java:280)
	at tigase.server.xmppserver.S2SConnectionManager.processSocketData(S2SConnectionManager.java:50)
	at tigase.server.ConnectionManager.packetsReady(ConnectionManager.java:347)
	at tigase.server.ConnectionManager.packetsReady(ConnectionManager.java:61)
	at tigase.net.IOService.call(IOService.java:184)
	at tigase.xmpp.XMPPIOService.call(XMPPIOService.java:144)
	at tigase.xmpp.XMPPIOService.call(XMPPIOService.java:49)
	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
	at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
	at java.base/java.lang.Thread.run(Thread.java:834)