java.lang.NullPointerException

null

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Solutions on the web20368

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  • via GitHub by todoubaba
    , 1 year ago
    null
  • null
  • Stack trace

    • java.lang.NullPointerException: null at java.util.concurrent.ConcurrentHashMap.hash(ConcurrentHashMap.java:333) at java.util.concurrent.ConcurrentHashMap.remove(ConcurrentHashMap.java:1175) at org.geppetto.frontend.controllers.ConnectionsManager.removeConnection(ConnectionsManager.java:96) at org.geppetto.frontend.controllers.ConnectionsManager.purgeLostConnections(ConnectionsManager.java:82) at org.geppetto.frontend.controllers.ConnectionsManager.addConnection(ConnectionsManager.java:54) at org.geppetto.frontend.controllers.WebsocketConnection.onOpen(WebsocketConnection.java:122) at org.apache.catalina.websocket.StreamInbound.onUpgradeComplete(StreamInbound.java:240) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:603) at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)

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