Websocket closed - not able to establish the connection with the socket

[nitshooda]

Error: WebSocket closed
at GremlinClient.cancelPendingCommands (C:\Users\nhooda\workspace\km-alpha\node_modules\gremlin\lib\GremlinClient.js:229:19)
at GremlinClient.handleDisconnection (C:\Users\nhooda\workspace\km-alpha\node_modules\gremlin\lib\GremlinClient.js:206:10)
at WebSocketGremlinConnection.connection.on.event (C:\Users\nhooda\workspace\km-alpha\node_modules\gremlin\lib\GremlinClient.js:113:42)
at emitOne (events.js:116:13)
at WebSocketGremlinConnection.emit (events.js:211:7)
at WebSocketGremlinConnection.onClose (C:\Users\nhooda\workspace\km-alpha\node_modules\gremlin\lib\WebSocketGremlinConnection.js:50:10)
at WebSocketGremlinConnection.ws.onclose.event (C:\Users\nhooda\workspace\km-alpha\node_modules\gremlin\lib\WebSocketGremlinConnection.js:31:37)
at WebSocket.onClose (C:\Users\nhooda\workspace\km-alpha\node_modules\ws\lib\EventTarget.js:107:16