Description of problem: calibre program fails to start Version-Release number of selected component (if applicable): $ calibre --version calibre (calibre 4.13) How reproducible: always Steps to Reproduce: 1. $ calibre 2. fails to start 3. Actual results: $ calibre Traceback (most recent call last): File "/usr/bin/calibre", line 20, in <module> sys.exit(calibre()) File "/usr/lib64/calibre/calibre/gui_launch.py", line 72, in calibre main(args) File "/usr/lib64/calibre/calibre/gui2/main.py", line 542, in main listener = create_listener() File "/usr/lib64/calibre/calibre/gui2/main.py", line 513, in create_listener return Listener(address=gui_socket_address()) File "/usr/lib64/calibre/calibre/utils/ipc/server.py", line 109, in __init__ self._listener._unlink.cancel() AttributeError: 'NoneType' object has no attribute 'cancel' Expected results: launch program Additional info: tried removing all plugins and contents of ~/.config/calibre ~/.local/.../calibre and # dnf remove calibre followed by # dnf install calibre so fresh install does not help.
I experience the same error. A re-install didn't help either.
Update Trying to install older fc32 builds from https://kojipkgs.fedoraproject.org/packages/calibre/ didn't work. They either installed and failed to start with the same error or had dependency problems. I was able to install calibre-4.16.0-2.fc33.x86_64 by: $ sudo dnf remove calibre $ sudo dnf install calibre --releasever=33 After that calibre works (but I hope I didn't make my Fedora installation too Frankenstein). P.S. Dependencies such as python3-qt5-webengine moved from 5.13.x to 5.14.x, maybe it's the latest 5.13.x. Don't know how relevant that is.
*** This bug has been marked as a duplicate of bug 1840780 ***