Crash on launch AttributeError

[Marcelo Escobal]

After I changed my ebooks folder Calibre fails when launching without messages if launching from desktop and when launching from command line:

Traceback (most recent call last):
  File "/usr/bin/calibre", line 20, in <module>
    sys.exit(calibre())
  File "/usr/lib/calibre/calibre/gui_launch.py", line 73, in calibre
    main(args)
  File "/usr/lib/calibre/calibre/gui2/main.py", line 543, in main
    listener = create_listener()
  File "/usr/lib/calibre/calibre/gui2/main.py", line 514, in create_listener
    return Listener(address=gui_socket_address())
  File "/usr/lib/calibre/calibre/utils/ipc/server.py", line 110, in __init__
    self._listener._unlink.cancel()
AttributeError: 'NoneType' object has no attribute 'cancel'

Running Ubuntu 20.04 with Calibre 4.99.4 in AMD Ryzen desktop PC.

[Eli Schwartz (eschwartz)]

Not a calibre bug, talk to Ubuntu.

 affects ubuntu/calibre
 duplicate 1898904

[Kovid Goyal (kovid)]

The calibre package in Ubuntu is broken, please uninstall it and use the official calibre binaries from https://calibre-ebook.com/download_linux

 duplicate 1898904

[Marcelo Escobal (marcelo-escobal)]

Solved! Thanks for your quick answer.