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[Bug 1898904] Re: Calibre crashes at startup with AttributeError: 'NoneType' object has no attribute 'cancel'

 

Evans, great thanks for info how to fix, it works fine.

I have written bash file for the users that are not so technical.

Instructions:
1. Download file patch.sh from my post.
2. Open terminal, default keyboard shortcut is: CTRL+ALT+T
3. Set execution permissions: chown 700 patch.sh
4. Execute commands: ./patch.sh
5. Then you can delete patch.sh file: rm patch.sh

Hope this helps for others too.

P.S. For non-technical users, package maintainer that has packaged
original Calibre program in Ubuntu 20.04, please update the package and
push it to official Ubuntu repository.

** Attachment added: "patch.sh"
   https://bugs.launchpad.net/ubuntu/+source/calibre/+bug/1898904/+attachment/5421362/+files/patch.sh

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https://bugs.launchpad.net/bugs/1898904

Title:
  Calibre crashes at startup with AttributeError: 'NoneType' object has
  no attribute 'cancel'

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