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Ubuntu 20.04 更新错误

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Ubuntu 20.04 更新错误 
W: An error occurred during the signature verification. 
The repository is not updated and the previous index files will be used. 
GPG error: http://ppa.launchpad.net/libreoffice/ppa/ubuntu focal 
InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 83FBA1751378B444
E: The repository 'http://ppa.launchpad.net/ubuntu-wine/ppa/ubuntu focal Release' does not have a Release file.
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.

答案1

Wine PPA 已过时。它不为您的 Ubuntu 20.04 LTS 版本提供软件包。

请通过以下方式删除 PPA

sudo add-apt-repository -r ppa:ubuntu-wine/ppa

要修复 LibreOffice PPA 的签名，请通过以下方式重新添加它

sudo add-apt-repository -r ppa:libreoffice/ppa
sudo add-apt-repository ppa:libreoffice/ppa

sudo apt-key adv --keyserver keyserver.ubuntu.com --recv 83FBA1751378B444

然后运行sudo apt-get update。

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