no process in pidfile; found running, none killed

I'm working on an emailnotifier script on RaspberryPi which was written in Python. I've found a tutorial page, I've exactly copied the default code (which works fine with a simple "python emailnotifier.py") but I wanted to improve it as a startup service. The code can be found at the bottom at this page (Sorry dunno how to insert it): https://pimylifeup.com/raspberry-pi-email-notifier/ After I start the service then check the status, the following can be read: "Stopping system #DAEMON_NAME daemon:start-stop-daemon: warning: failed to kill 2270: No such process No process in pidfile '/var/run/emailnotifier.pid' found running; none killed. failed!