Fix prowlarr grab error

[himsin]

This PR fixes below error while grabbing a torrent via prowlarr tool:

{
        "error": "Failed to add torrent: {\"added_torrent_ids\":[\"d036c289e20891fbb23ac6bfb2890587fb15b974\"],\"failure_count\":0,\"pending_count\":0,\"success_count\":1}"
    }