Jürgen, my apologies, you can only skip some of Step 5. You do need to create the “.env” file and you do need to set the HOST and PORT fields but you should set “WEATHER_PROVIDER=PWS” and ignore the OWM/DARKSKY_API settings. You can then manually run the command “npm start” to start the service and try Step 7 as a test. Note that since you specified PWS as the weather provider and we haven’t yet set up the PWS to send to the Synology then the test results will show a lot of “null” values.