Hello everyone,  I am facing issue with creating an custom python processor in Nifi 2.0.0. It is linux based server with installed java 22 and python 3.9.18. I also set the nifi.properties command to the python3.9. Currently I am just trying to get the simplest processor such as  from nifiapi.flowfiletransform import FlowFileTransform, FlowFileTransformResult class WriteHelloWorld(FlowFileTransform): class Java: implements = ['org.apache.nifi.python.processor.FlowFileTransform'] class ProcessorDetails: version = '0.0.1-SNAPSHOT' def __init__(self, **kwargs): pass def transform(self, context, flowfile): return FlowFileTransformResult(relationship = "success", contents = "Hello World", attributes = {"greeting": "hello"}) This is picked up by nifi and it seems that successfuly but in the GUI the process still has the warning 'Processor' is invalid because initializing runtime environment for the Processor. From the logs I saw that there is mentioned /work/python/controller folder which is totally missing for me. When I change the __init__ to pass and manually copy the python interpreter to the /work/python/controller then the warning disappear but I get runtime error which can be seen in the log below I also verified that under the /work/python/extensions/WriteHelloWorld/0.0.1-SNAPSHOT I see correct files with dependency-download.complete with content True and empty env-creation-complete.txt In bin also I see all venv activate files created.   I also can manually enter the created venv using the activate.csh file. So the main problem seems to be with the communication between nifi and python. Nifi runs as admin.  Any idea how to solve it or find the rootcause of this problem? I already did all the steps from Apache NiFi custom processor runtime environment e... - Cloudera Community - 390917   ... View more