I want to migrate nifi-websocket-processors-nar-1.9.2.nar to nifi 1.2.0 and i got this error
java.util.ServiceConfigurationError: org.apache.nifi.controller.ControllerService: Provider org.apache.nifi.websocket.jetty.JettyWebSocketServercould not be instantiated
I need your help
It seems that you are trying to load a new (1.9.2) processor into a rather old version of Nifi (1.2).
In general I would not expect that to succeed.
A quick glance suggests that the websocket processers have been introduced since 1.5, so I don't think there is a 1.2 version for this.
Please consider using a more recent version of Nifi as you are currently 7 versions behind.