After some time of debugging I found this here: 
How is this possible ??? 
Group is still null after being set.. the same happens for version.



Jorge Machado





> On 12 Mar 2018, at 08:46, Jorge Machado <[email protected]> wrote:
> 
> Hello everyone, 
> 
> I we setting up the Nifi registry are we are getting this error when trying 
> to import a flow from Registry into Nifi: 
> 
> Multiple versions of …. exist. No exact match for default:...:unversioned.
> To note that we have multiple versions of the same processor in the lib 
> folder (which works for Templates)
> Our Manifest inside the nar file looks like this: 
> Manifest-Version: 1.0
> Implementation-Title: componentName
> Implementation-Version: 1.5.9.rc.1
> Nar-Dependency-Group: org.apache.nifi
> Nar-Version: 1.5.9.rc.1
> Nar-Dependency-Version: 1.5.0
> Nar-Id: componentName
> Nar-Group: com.componentName
> Nar-Dependency-Id: nifi-standard-services-api-nar
> 
> I see this on the Nifi Logs: 
> 2018-03-12 08:33:51,304 INFO [NiFi Web Server-94] 
> o.a.n.w.a.c.IllegalStateExceptionMapper java.lang.IllegalStateException: 
> Multiple versions of com.gfk.nifi.processor.customlogging.CustomLogger exist. 
> No exact match for default:ipmvp-nifi-customlogattribute:unversioned.. 
> Returning Conflict response.
> 
> Any Ideias ? 
> 
> Jorge
> 
> 
> 
> 
> 

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