I am trying to configure the slack notification from Prometheus alertmanager with below yml. When i start my alert-manager container it keep on restarting and shows below error. alertmanager | level=error ts=2021-01-12T04:08:19.040Z caller=coordinator.go:124 component=configuration msg=”Loading configuration file failed” file=/etc/alertmanager/alertmanager.yml err=”yaml: invalid leading UTF-8 octet” Have validated Here it shown as valid yaml Also checked with notepad++ the encoding already showing