Error on Web Socket Client Destination

Error Stack Trace

com.streamsets.pipeline.api.StageException: HTTP_50 - Error sending resource. Reason: java.io.IOException: /opt/streamsets-datacollector-5.3.0 is a directory	at com.streamsets.pipeline.stage.destination.websocket.WebSocketTarget.throwStageException(WebSocketTarget.java:202)	at com.streamsets.pipeline.stage.destination.websocket.WebSocketTarget.write(WebSocketTarget.java:180)	at com.streamsets.pipeline.api.base.configurablestage.DTarget.write(DTarget.java:34)	at com.streamsets.datacollector.runner.StageRuntime.lambda$execute$2(StageRuntime.java:291)	at com.streamsets.pipeline.api.impl.CreateByRef.call(CreateByRef.java:40)	at com.streamsets.datacollector.runner.StageRuntime.execute(StageRuntime.java:232)	at com.streamsets.datacollector.runner.StageRuntime.execute(StageRuntime.java:299)	at com.streamsets.datacollector.runner.StagePipe.process(StagePipe.java:209)	at com.streamsets.datacollector.execution.runner.common.ProductionPipelineRunner.processPipe(ProductionPipelineRunner.java:874)	at com.streamsets.datacollector.execution.runner.common.ProductionPipelineRunner.lambda$executeRunner$3(ProductionPipelineRunner.java:922)	at com.streamsets.datacollector.runner.PipeRunner.acceptConsumer(PipeRunner.java:195)	at com.streamsets.datacollector.runner.PipeRunner.forEachInternal(PipeRunner.java:140)	at com.streamsets.datacollector.runner.PipeRunner.executeBatch(PipeRunner.java:120)	at com.streamsets.datacollector.execution.runner.common.ProductionPipelineRunner.executeRunner(ProductionPipelineRunner.java:921)	at com.streamsets.datacollector.execution.runner.common.ProductionPipelineRunner.runSourceLessBatch(ProductionPipelineRunner.java:896)	at com.streamsets.datacollector.execution.runner.common.ProductionPipelineRunner.processBatch(ProductionPipelineRunner.java:511)	at com.streamsets.datacollector.runner.StageRuntime$3.run(StageRuntime.java:371)	at java.security.AccessController.doPrivileged(Native Method)	at com.streamsets.datacollector.runner.StageRuntime.processBatch(StageRuntime.java:367)	at com.streamsets.datacollector.runner.StageContext.processBatch(StageContext.java:334)	at com.streamsets.pipeline.stage.origin.websocket.WebSocketClientSource.process(WebSocketClientSource.java:273)	at com.streamsets.pipeline.stage.origin.websocket.WebSocketClientSource.onMessage(WebSocketClientSource.java:244)	at sun.reflect.GeneratedMethodAccessor495.invoke(Unknown Source)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:498)	at org.eclipse.jetty.websocket.common.events.annotated.CallableMethod.call(CallableMethod.java:71)	at org.eclipse.jetty.websocket.common.events.annotated.OptionalSessionCallableMethod.call(OptionalSessionCallableMethod.java:72)	at org.eclipse.jetty.websocket.common.events.JettyAnnotatedEventDriver.onTextMessage(JettyAnnotatedEventDriver.java:234)	at org.eclipse.jetty.websocket.common.message.SimpleTextMessage.messageComplete(SimpleTextMessage.java:69)	at org.eclipse.jetty.websocket.common.events.AbstractEventDriver.appendMessage(AbstractEventDriver.java:66)	at org.eclipse.jetty.websocket.common.events.JettyAnnotatedEventDriver.onTextFrame(JettyAnnotatedEventDriver.java:226)	at org.eclipse.jetty.websocket.common.events.AbstractEventDriver.incomingFrame(AbstractEventDriver.java:162)	at org.eclipse.jetty.websocket.common.WebSocketSession.incomingFrame(WebSocketSession.java:476)	at org.eclipse.jetty.websocket.common.extensions.ExtensionStack.incomingFrame(ExtensionStack.java:220)	at org.eclipse.jetty.websocket.common.Parser.notifyFrame(Parser.java:219)	at org.eclipse.jetty.websocket.common.Parser.parse(Parser.java:244)	at org.eclipse.jetty.websocket.common.io.AbstractWebSocketConnection.readParse(AbstractWebSocketConnection.java:560)	at org.eclipse.jetty.websocket.common.io.AbstractWebSocketConnection.onFillable(AbstractWebSocketConnection.java:391)	at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:305)	at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:103)	at org.eclipse.jetty.io.ssl.SslConnection$DecryptedEndPoint.onFillable(SslConnection.java:411)	at org.eclipse.jetty.io.ssl.SslConnection.onFillable(SslConnection.java:305)	at org.eclipse.jetty.io.ssl.SslConnection$2.succeeded(SslConnection.java:159)	at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:103)	at org.eclipse.jetty.io.ChannelEndPoint$2.run(ChannelEndPoint.java:118)	at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:333)	at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:310)	at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:168)	at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:126)	at org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:366)	at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:765)	at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:683)	at java.lang.Thread.run(Thread.java:750)Caused by: java.io.IOException: /opt/streamsets-datacollector-5.3.0 is a directory	at org.eclipse.jetty.util.resource.PathResource.getInputStream(PathResource.java:392)	at org.eclipse.jetty.util.security.CertificateUtils.getKeyStore(CertificateUtils.java:52)	at org.eclipse.jetty.util.ssl.SslContextFactory.loadTrustStore(SslContextFactory.java:1110)	at org.eclipse.jetty.util.ssl.SslContextFactory.load(SslContextFactory.java:276)	at org.eclipse.jetty.util.ssl.SslContextFactory.doStart(SslContextFactory.java:241)	at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)	at org.eclipse.jetty.util.component.ContainerLifeCycle.start(ContainerLifeCycle.java:138)	at org.eclipse.jetty.util.component.ContainerLifeCycle.doStart(ContainerLifeCycle.java:108)	at org.eclipse.jetty.client.HttpClient.doStart(HttpClient.java:246)	at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)	at org.eclipse.jetty.util.component.ContainerLifeCycle.start(ContainerLifeCycle.java:138)	at org.eclipse.jetty.util.component.ContainerLifeCycle.doStart(ContainerLifeCycle.java:108)	at org.eclipse.jetty.websocket.client.WebSocketClient.doStart(WebSocketClient.java:387)	at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)	at com.streamsets.pipeline.stage.destination.websocket.WebSocketTarget.write(WebSocketTarget.java:165)	... 51 more