Your ROOT_URL in app.ini is https://git.cloudchain.link/ but you are visiting https://dash.bss.nz/open-source-mirrors/jellyfin/commits/commit/2e9aa146a56472af4dc285a2d2c70f58b41035e1/Jellyfin.Api/Controllers/VideoAttachmentsController.cs You should set ROOT_URL correctly, otherwise the web may not work correctly.