There's nothing you can change with that webhook configuration. I don't understand how you ever got some JSON containing
"groupLabels":"", "commonLabels":"", "commonAnnotations":"", Are you saying this was something posted from Alertmanager to your app listening on port 2000? Or from that app to MS Teams? How did you capture it? What versions of prometheus and alertmanager do you have installed? -- You received this message because you are subscribed to the Google Groups "Prometheus Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/prometheus-users/96dbbe86-7e28-44c0-8ad3-760b5b23c255%40googlegroups.com.

