jar not working

[silverbullet1]

Hello,

I am trying to run the latest jar v1.5.5 but it gives me this error :
no main manifest attribute, in nifi-deploy-config-1.5.5.jar

i also tried the other 3-4 latest versions but they all fail with the same thing.

I am able to execute V1.1.15 but it gives me a runtime error.

Also, it seems like the development of this tool has stopped? I see builds failing.
I am not sure if it will support Airflow v1.13.2
I have java v16.