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via Stack Overflow by aryanRaj_kary
, 5 months ago
This exception has no message.
via Google Groups by Balaji, 2 years ago
via Google Groups by Sujit, 2 years ago
via Atlassian JIRA by Seb Ruiz, 1 year ago
This exception has no message.
via Atlassian JIRA by Steve Smith [SYD/AMS/LHR], 2 years ago
java.lang.NullPointerException: 	at java.util.concurrent.ConcurrentHashMap.get(	at org.springframework.session.web.socket.handler.WebSocketRegistryListener.registerWsSession(	at org.springframework.session.web.socket.handler.WebSocketRegistryListener.afterConnectionEstablished(	at org.springframework.session.web.socket.handler.WebSocketRegistryListener.onApplicationEvent(	at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(	at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(	at	at