Hi @mattrouss
Thanks for your reply, which I missed.
I don’t remember how I got this pyzed x86_64 wheel version, but the one I installed is the one you mentioned (pyzed-4.1-cp36-cp36m-linux_aarch64.whl).
I think the missing PYTHONPATH to the site packages was also a problem, as pyzed couldn’t see that the correct version of numpy was already installed.
Everything works fine with the streaming_sender running as a service.