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https://issues.apache.org/jira/browse/NIFI-2675?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15437937#comment-15437937
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ASF GitHub Bot commented on NIFI-2675:
--------------------------------------
Github user alopresto commented on the issue:
https://github.com/apache/nifi/pull/951
The fix looks like it solves the issue. I imported the `webcrawler.xml`
template from [NiFi
templates](https://cwiki.apache.org/confluence/display/NIFI/Example+Dataflow+Templates)
and configured the controller services, then exported the template
successfully. Without further instructions on how to reproduce the
`NullPointerException`, I believe this is fixed.
> NPE when creating a template where CS is referencing another CS
> ---------------------------------------------------------------
>
> Key: NIFI-2675
> URL: https://issues.apache.org/jira/browse/NIFI-2675
> Project: Apache NiFi
> Issue Type: Bug
> Reporter: Oleg Zhurakousky
> Assignee: Oleg Zhurakousky
> Fix For: 1.0.0
>
>
> {code}
> java.lang.NullPointerException: null
> at java.util.UUID.fromString(UUID.java:192) ~[na:1.8.0_77]
> at
> org.apache.nifi.web.api.dto.FlowSnippetDTO.removeInstanceIdentifierIfNecessary(FlowSnippetDTO.java:220)
> {code}
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