Whenever I try to update terminal tells me this

Ign:20 ./ Release.gpg Reading package lists... Done W: GPG error: ./ Release: The following signatures were invalid: EXPKEYSIG 2F7F0DA5FD5B64B9 home:strycore OBS Project <home:> E: The repository ' ./ Release' is not signed. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details.

The answer here ' ./ Release' is not signed does not solve my problem.

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2 Answers

The key is expired, you could try downloading it again.

wget -qO - | sudo apt-key add - sudo apt-get update
2

I was able to resolve my problem by using cmd

curl | sudo apt-key add - echo 'deb /' | sudo tee /etc/apt/sources.list.d/home:manuelschneid3r.list sudo wget -nv -O "/etc/apt/trusted.gpg.d/home:manuelschneid3r.asc" sudo apt update sudo apt install albert

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