java.lang.IncompatibleClassChangeError

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  • java.lang.IncompatibleClassChangeError: Found class org.java_websocket.WebSocket, but interface was expected at AutobahnServerTest.onMessage(AutobahnServerTest.java:48) at org.java_websocket.server.WebSocketServer.onWebsocketMessage(WebSocketServer.java:457) at org.java_websocket.WebSocketImpl.deliverMessage(WebSocketImpl.java:561) at org.java_websocket.WebSocketImpl.decodeFrames(WebSocketImpl.java:328) at org.java_websocket.WebSocketImpl.decode(WebSocketImpl.java:149) at org.java_websocket.server.WebSocketServer$WebSocketWorker.run(WebSocketServer.java:593)
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