Public bug reported:
$ calibre
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'
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: calibre 4.99.4+dfsg+really4.12.0-1build1
ProcVersionSignature: Ubuntu 5.4.0-42.46-generic 5.4.44
Uname: Linux 5.4.0-42-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.8
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: XFCE
Date: Thu Sep 3 10:02:21 2020
InstallationDate: Installed on 2018-04-27 (859 days ago)
InstallationMedia: Xubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
PackageArchitecture: all
SourcePackage: calibre
UpgradeStatus: Upgraded to focal on 2020-08-27 (6 days ago)
** Affects: calibre (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug focal third-party-packages
** Bug watch added: Debian Bug tracker #959559
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=959559
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https://bugs.launchpad.net/bugs/1894061
Title:
calibre crashes on startup with AttributeError: 'NoneType' object has
no attribute 'cancel'
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