Unsigned plugin not working


We have been using the following plugin PRTG plugin for Grafana | Grafana Labs since Grafana 7 but today when I’m trying out Grafana 8 with Docker Compose, the plugin no longer works.

I understand that the plugin is unsigned and have not been maintained by the creator for some time, but we’d love to continue its use. To my understanding, we should be able to allow loading unsigned plugins.

our docker compose looks like this

    container_name: grafana
    restart: always
    image: grafana/grafana:8.0.5
      - "traefik.backend=grafana"
      - "traefik.docker.network=compose_frontend"
      - "traefik.port=3000"
      - "traefik.frontend.entryPoints=http,https"
      - "traefik.frontend.rule=Host:grafana.foo.net"
      - "GF_ALLOW_LOADING_UNSIGNED_PLUGINS=jasonlashua-prtg-datasource"
      - "GF_INSTALL_PLUGINS=grafana-clock-panel,grafana-piechart-panel"
      - "GR_PATHS_PLUGINS=/var/lib/grafana/plugins"
      - "GF_SERVER_ROOT_URL=https://grafana.foo.net"
      - ./grafana/grafana.db:/var/lib/grafana/grafana.db
      - ./grafana/plugins:/var/lib/grafana/plugins

However whenever I run docker, I keep getting the following error

grafana     | t=2021-07-14T02:18:55+0000 lvl=warn msg="Some plugin scanning errors were found" logger=plugins errors="plugin with ID 'jasonlashua-prtg-datasource' already exists in '/var/lib/grafana/plugins/jasonlashua-prtg-datasource', plugin 'jasonlashua-prtg-datasource' is unsigned"

in Grafana’s plugin section I got this message

Would the community be able to help if case i’m missing something?

Modify default.ini to development mode