javax.servlet.ServletException: javax.websocket.DeploymentException: A parameter of type [interface javax.websocket.Session] was found on method[onOpen] of class [java.lang.reflect.Method] that did not have a @PathParam annotation

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via Stack Overflow by Shailesh Vaishampayan
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javax.websocket.DeploymentException: A parameter of type [interface javax.websocket.Session] was found on method[onOpen] of class [java.lang.reflect.Method] that did not have a @PathParam annotation
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javax.websocket.DeploymentException: Multiple Endpoints may not be deployed to using the same path [/websocket]
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javax.websocket.DeploymentException: The path [websocket] is not valid.
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javax.websocket.DeploymentException: No Throwable parameter was present on the method [onError] of class [org.analytic.dashboard.TrainNeuralNet] that was annotated with OnError
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javax.websocket.DeploymentException: Multiple Endpoints may not be deployed to the same path [/workspaces/{wsid}/notifications] : existing endpoint was class com.klatencor.sots.Notifications.NotificationEndpoint and new endpoint is class com.klatencor.sots.Notifications.NotificationEndpoint
javax.websocket.DeploymentException: A parameter of type [interface javax.websocket.Session] was found on method[onOpen] of class [java.lang.reflect.Method] that did not have a @PathParam annotation	at org.apache.tomcat.websocket.pojo.PojoMethodMapping.getPathParams(PojoMethodMapping.java:233)	at org.apache.tomcat.websocket.pojo.PojoMethodMapping.(PojoMethodMapping.java:122)	at org.apache.tomcat.websocket.server.WsServerContainer.addEndpoint(WsServerContainer.java:239)	at org.apache.tomcat.websocket.server.WsSci.onStartup(WsSci.java:143)	at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5444)	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)	at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559)	at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549)	at java.util.concurrent.FutureTask.run(FutureTask.java:262)	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)	at java.lang.Thread.run(Thread.java:744)