Non ASCII warning - Amazon Managed Service for Prometheus

Non ASCII warning

When the log contains the following warning

{ "workspaceId": "ws-efdc5b42-b051-11ec-b123-4567ac120002", "message": { "log": "Subject has been modified because it contains control or non-ASCII characters." "level": "WARN" }, "component": "alertmanager" }

This means that the subject has non-ASCII characters.

Action to take

Remove references in subject field of your template to the labels that might contain non-ASCII characters.