can.logger script doesn't work when started from systemd

Hi,

I use a systemd service to log the socketcan can0 with can.logger script.
I use a Unit file that call the script:

...
[Service]
Type=simple
ExecStart=python -m can.logger -f /home/admin/can-logs/test.blf -v -c can0 -i socketcan
...

This script works perfectly when called from the linux shell, but when I start it from the service, the log file is created in /home/admin/can-logs but stay empty.
What could be wrong ? is python-can not able to handle socketcan from systemd service ?

Thanks for your help,

Start with the systemd Unit and its ExecStart command, then compare its environment and permissions with the working Linux shell invocation. Reproduce the service run with the can.logger command and determine why the created BLF file remains empty; done means logging from can0 produces records under systemd.

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