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I am using Ubuntu 20.04.3 LTS.

~ sudo apt update
E: Conflicting values set for option Signed-By regarding source https://apt.kitware.com/ubuntu/ focal: /usr/share/keyrings/kitware-archive-keyring.gpg !=
E: The list of sources could not be read.

As a total newbie, I have no idea what to do. Any guidance would be most appreciated. Hopefully, a similar question has been asked in the past and one of you can kindly link to it. My search for duplicates was not very successful.

muru
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Rodrigo de Azevedo
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1 Answers1

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Finally, I solved the problem by commenting the following line in file /etc/apt/sources.list.

deb [signed-by=/usr/share/keyrings/kitware-archive-keyring.gpg] https://apt.kitware.com/ubuntu/ focal main # disabled on upgrade to focal
Rodrigo de Azevedo
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