Thanks @MattWho , Maybe we tried to skip versions and created this problem. But we could solve it. @gourexe  I think the solution that we have applied at that moment, was to migrate the flow to 1.16.3 in a fresh installation. Reconfigure all the secrets and then move on the versions. The lesson that we learned is that we should have a process to test and apply new versions from Nifi, as soon as possible. 🙂 ... View more

For me it was the config.yml which I was generated with some other name earlier, like - xxxx.yml , whereas it should be config.yml instead. After that my minifi getting started normally. Hope it will help few. ... View more

Does anyone from the community, have answer this question what about if java version greater than 8, how the toolkit will work with "JAXB-API has not been found"? ... View more