ERROR [main-EventThread] o.a.c.framework.imps.EnsembleTracker Invalid config event received

Nifi can running normally before until today,but i don’t change any configuration.

Any help is apppreciated!

LOG:
ERROR [main-EventThread] o.a.c.framework.imps.EnsembleTracker Invalid config event received: {server.1=z01:2888:3888:participant, version=0, server.3=z03:2888:3888:participant, server.2=z02:2888:3888:participant}

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Author: Kong