Error reading Prometheus: Metric request error

Grafana Prometheus
1

  • What Grafana version and what operating system are you using?
    v8.3.4 / Ubuntu 22.04.1

  • What are you trying to achieve?
    Adding Prometheus as Data Source

  • How are you trying to achieve it?
    I installed Prometheus, Blackbox Exporter and exporter_exporter (reverse Proxy, so i can export all with one port)

  • What happened?
    When adding Prometheus as a data source, it shows an error message

  • What did you expect to happen?
    Data Source is working

  • Can you copy/paste the configuration(s) that you are having problems with?

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  • Did you receive any errors in the Grafana UI or in related logs? If so, please tell us exactly what they were.

    Bildschirmfoto 2022-10-25 um 11.02.01
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  • Did you follow any online instructions? If so, what is the URL?