Websocket SSL handshake failure

Hello!

The following error occurs for websocket in user pah - can anybody help?

Error detected by NeoLoad
Error Code: NL-WEBSOCKET-CHANNEL-ENGINE Message: Error occurred while executing WebSocket channel. Details: javax.net.ssl.SSLException: Received fatal alert: handshake_failure at sun.security.ssl.Alerts.getSSLException(Alerts.java:219) at sun.security.ssl.SSLEngineImpl.fatal(SSLEngineImpl.java:1666) at sun.security.ssl.SSLEngineImpl.fatal(SSLEngineImpl.java:1634) at sun.security.ssl.SSLEngineImpl.recvAlert(SSLEngineImpl.java:1800) at sun.security.ssl.SSLEngineImpl.readRecord(SSLEngineImpl.java:1083) at sun.security.ssl.SSLEngineImpl.readNetRecord(SSLEngineImpl.java:907) at sun.security.ssl.SSLEngineImpl.unwrap(SSLEngineImpl.java:781) at javax.net.ssl.SSLEngine.unwrap(SSLEngine.java:624) at org.eclipse.jetty.io.ssl.SslConnection$DecryptedEndPoint.fill(SslConnection.java:526) at org.eclipse.jetty.io.ssl.SslConnection$DecryptedEndPoint.flush(SslConnection.java:857) at org.eclipse.jetty.io.WriteFlusher.flush(WriteFlusher.java:419) at org.eclipse.jetty.io.WriteFlusher.completeWrite(WriteFlusher.java:375) at org.eclipse.jetty.io.ssl.SslConnection$1.run(SslConnection.java:96) at org.eclipse.jetty.io.ssl.SslConnection.onFillable(SslConnection.java:205) at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:265) at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:95) at org.eclipse.jetty.io.SelectChannelEndPoint$2.run(SelectChannelEndPoint.java:75) at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.produceAndRun(ExecuteProduceConsume.java:213) at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.run(ExecuteProduceConsume.java:147) at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:654) at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:572) at java.lang.Thread.run(Thread.java:745)