SpringBoot Closing session due to exception for StandardWebSocketSession

i develop project using spring websocket ,but there is couple case this error is showing and i don't know how this error happen

o.s.w.s.h.ExceptionWebSocketHandlerDecorator||ERROR|Closing session due to exception for StandardWebSocketSession[id=, uri=ws://]
    java.lang.IllegalStateException: WebSocketHandler not found for StandardWebSocketSession[id=eb047472-8d50-861a-138e-8c01c9729754, uri=]
        at org.springframework.web.socket.handler.PerConnectionWebSocketHandler.getHandler(PerConnectionWebSocketHandler.java:113)
        at org.springframework.web.socket.handler.PerConnectionWebSocketHandler.handleTransportError(PerConnectionWebSocketHandler.java:91)

what exactly cause of this problem, and how to handle it

Comment From: wilkinsona

Thanks for getting in touch, but it feels like this is a question that would be better suited to Stack Overflow. As mentioned in the guidelines for contributing, we prefer to use GitHub issues only for bugs and enhancements. Feel free to update this issue with a link to the re-posted question (so that other people can find it) or add some more details if you feel this is a genuine bug.