See this commit, it *might* fix your issue: https://github.com/kovidgoyal/calibre/commit/281b41640686a759d6e257f4979e94d3c866b2db
See this commit, it *might* fix your issue: https:/ /github. com/kovidgoyal/ calibre/ commit/ 281b41640686a75 9d6e257f4979e94 d3c866b2db