Not responding on port 9414

When I browse http://:9414/metrics I get “Unable to connect”.
I migrated from Homey to Homey Pro. This worked on Homey, but on Homey Pro it’s not responding.
And before anyone states the question : There is no firewall between my PC and Homey. When I browse to http:// I get redirected to

Homey model : Homey Pro (Early 2019)
Homey version : 4.0.0

Port 9414 is a port that is managed by the Prometheus exporter app, so make sure that’s actually running properly.

Thx. I restarted the app and it’s working now.