Received message from unsupported version: [2.0.0] minimal compatible version is: [6.8.0]
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java.lang.IllegalStateException: Received message from unsupported version: [2.0.0] minimal compatible version is: [6.8.0] at org.elasticsearch.transport.InboundMessage.ensureVersionCompatibility(InboundMessage.java:152) ~[elasticsearch-7.6.1.jar:7.6.1] at org.elasticsearch.transport.InboundMessage.access$000(InboundMessage.java:37) ~[elasticsearch-7.6.1.jar:7.6.1] at org.elasticsearch.transport.InboundMessage$Reader.deserialize(InboundMessage.java:70) ~[elasticsearch-7.6.1.jar:7.6.1] at org.elasticsearch.transport.InboundHandler.messageReceived(InboundHandler.java:114) ~[elasticsearch-7.6.1.jar:7.6.1] at org.elasticsearch.transport.InboundHandler.inboundMessage(InboundHandler.java:103) ~[elasticsearch-7.6.1.jar:7.6.1] at org.elasticsearch.transport.TcpTransport.inboundMessage(TcpTransport.java:667) [elasticsearch-7.6.1.jar:7.6.1]