Possibly related to https://issues.apache.org/jira/browse/NIFI-14462 I suggest reviewing discussion in this Apache Jira and reviewing your "nifi.web.request.timeout" setting in the nifi.properties file. Making adjustments to this setting may help here. Please help our community grow. If you found any of the suggestions/solutions provided helped you with solving your issue or answering your question, please take a moment to login and click "Accept as Solution" on one or more of them that helped. Thank you, Matt ... View more