Your ROOT_URL in app.ini is https://git.cloudchain.link/ but you are visiting https://dash.bss.nz/open-source-mirrors/homepage/src/commit/b8eda91005f389eb2d907b8b56494b4f6df03447/docs/widgets/services/transmission.md You should set ROOT_URL correctly, otherwise the web may not work correctly.
homepage/docs/widgets/services/transmission.md

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title description
Transmission Transmission Widget Configuration

Uses the same username and password used to login from the web.

Allowed fields: ["leech", "download", "seed", "upload"].

widget:
    type: transmission
    url: http://transmission.host.or.ip
    username: username
    password: password
    rpcUrl: /transmission/ # Optional. Matches the value of "rpc-url" in your Transmission's settings.json file