org.springframework.web.client.HttpClientErrorException: 401 null

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    Root Cause Analysis

    1. org.springframework.web.client.HttpClientErrorException

      401 null

      at org.springframework.web.client.DefaultResponseErrorHandler.handleError()
    2. Spring
      RestTemplate.execute
      1. org.springframework.web.client.DefaultResponseErrorHandler.handleError(DefaultResponseErrorHandler.java:91)
      2. org.springframework.web.client.RestTemplate.handleResponse(RestTemplate.java:667)
      3. org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:620)
      4. org.springframework.web.client.RestTemplate.execute(RestTemplate.java:595)
      4 frames
    3. org.springframework.web
      SockJsClient.doHandshake
      1. org.springframework.web.socket.sockjs.client.RestTemplateXhrTransport.executeInfoRequestInternal(RestTemplateXhrTransport.java:138)
      2. org.springframework.web.socket.sockjs.client.AbstractXhrTransport.executeInfoRequest(AbstractXhrTransport.java:155)
      3. org.springframework.web.socket.sockjs.client.SockJsClient.getServerInfo(SockJsClient.java:286)
      4. org.springframework.web.socket.sockjs.client.SockJsClient.doHandshake(SockJsClient.java:254)
      4 frames
    4. Spring WebSocket
      WebSocketStompClient.connect
      1. org.springframework.web.socket.messaging.WebSocketStompClient.connect(WebSocketStompClient.java:274)
      2. org.springframework.web.socket.messaging.WebSocketStompClient.connect(WebSocketStompClient.java:255)
      3. org.springframework.web.socket.messaging.WebSocketStompClient.connect(WebSocketStompClient.java:235)
      4. org.springframework.web.socket.messaging.WebSocketStompClient.connect(WebSocketStompClient.java:219)
      4 frames
    5. com.hpi.hpdm
      WebsocketClient.main
      1. com.hpi.hpdm.console.message.WebsocketClient.openConnection(WebsocketClient.java:66)
      2. com.hpi.hpdm.console.message.WebsocketClient.main(WebsocketClient.java:35)
      2 frames