Hello and thank you very much for the quick response from you. Editing the file in the ROOT system as well as with the File Manager has the same effects. Here is the log file: thank you very much felix
2023-12-18T06:55:40.000Z => Starting Prometheus
2023-12-18T06:55:40.000Z ts=2023-12-18T06:55:40.840Z caller=main.go:487 level=error msg="Error loading config (--config.file=/app/data/config/prometheus.yml)" file=/app/data/config/prometheus.yml err="parsing YAML file /app/data/config/prometheus.yml: yaml: line 31: did not find expected key"
2023-12-18T06:55:43.000Z => Source custom variables for cli args
2023-12-18T06:55:43.000Z => Starting Prometheus
2023-12-18T06:55:43.000Z ts=2023-12-18T06:55:43.655Z caller=main.go:487 level=error msg="Error loading config (--config.file=/app/data/config/prometheus.yml)" file=/app/data/config/prometheus.yml err="parsing YAML file /app/data/config/prometheus.yml: yaml: line 31: did not find expected key"
2023-12-18T06:55:47.000Z => Source custom variables for cli args
2023-12-18T06:55:47.000Z => Starting Prometheus
2023-12-18T06:55:47.000Z ts=2023-12-18T06:55:47.269Z caller=main.go:487 level=error msg="Error loading config (--config.file=/app/data/config/prometheus.yml)" file=/app/data/config/prometheus.yml err="parsing YAML file /app/data/config/prometheus.yml: yaml: line 31: did not find expected key"