SYSTEMD_KILLMODE is set to 'control-group' on the top of the script, but the daemon is running with KillMode=process

Hey there, I installed 8.1 and upgraded a prior 7.9 server. I need to roll back my upgrade. So I uninstalled 8.1 and reinstalled 7.9 and I am facing this error. I have found the value to change in but how to reinstall the daemon?

You should be able to do the following to remove and reinstall the service configuration:

# Remove the service configuration only
./ remove
# Install the service configuration (does not automatically start)
./ install