Prometheus errors

Hello anyone know how to stop this errors

Apr 26 10:16:10 CCMDC01 prometheus-node-exporter[773]: time=“2023-04-26T10:16:10+01:00” level=error msg=“error gathering metrics: [from Gatherer #2] collected metric “univention_ad_connector_ad_reachable” { l
abel:<name:“instance” value:“CCMDC01.ccm.local” > untyped:<value:0 > } was collected before with the same name and label values\n” source=“log.go:172”

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