Hi,
I installed the Debian packet mqtt2prometheus_0.1.7_linux_amd64.deb on a Debian v12.1 system.
systemctl start mqtt2prometheus fails when /etc/default/prometheus-mqtt-exporter is missing.
There should be a
[ -f /etc/default/prometheus-mqtt-exporter ] || touch /etc/default/prometheus-mqtt-exporter
line in the postinst script or so.
Cheers,
Henning