org-roam-server: File viewer does not work

As you can see in the image:

Request to URL like http://127.0.0.1:8080/20201125095309-coding.html?token=null will return 404.

Configuration:

(setq org-roam-server-host "127.0.0.1"
      org-roam-server-port 8080
      org-roam-server-authenticate nil
      org-roam-server-export-inline-images t
      org-roam-server-serve-files nil
      org-roam-server-served-file-extensions '("pdf" "mp4" "ogv")
      org-roam-server-network-poll t
      org-roam-server-network-arrows nil
      org-roam-server-network-label-truncate t
      org-roam-server-network-label-truncate-length 60
      org-roam-server-network-label-wrap-length 20)