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The group member's supported protocols are incompatible with those of existing members

Yesterday, I found an error message from a log file.

The error message as below:  

The group member's supported protocols are incompatible with those of existing members


I had search it from google website.

when I searched this web page

https://stackoverflow.com/questions/55371819/nodejs-kafkajsprotocolerror-the-group-members-supported-protocols-are-incomp


Based on the best answer I modified group id from "a" to "b" in the configuration file. So, the consumer application running very well.

As you can see, connect and consumer should use different group id.



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