Missing source mapping file for seafile-ui.css causes 404 in Firefox Developer Console

This is a minor issue, but might be worth fixing anyways to avoid confusion and unnecessary errors.
In the CSS file for the Seafile UI (seafile-server-latest/seahub/media/css/seafile-ui.css) the last line is this one:

/*# sourceMappingURL=seafile-ui.map*/

This makes Firefox (and probably Chrome and others as well) look for this file whenever the Developer Console is launched, for example to inspect the CSS. Since the file does not exist (neither in this path nor anywhere else) the server will return 404.
There are probably two possible solutions to this: Either fix the path and provide the mapping file, or remove the line from the CSS file.