Comment 6 for bug 1877180

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Haim Daniel (hdaniel) wrote :

To fix this on Ubuntu 20.04 , 4.99.4+dfsg+really4.12.0-1build1:

sudo sed -ie 's/self._listener._unlink.cancel/# self._listener._unlink.cancel'/ /usr/lib/calibre/calibre/utils/ipc/server.py