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我在 Ubuntu 19.10 上并尝试将其升级到 20.04.1 LTS。但是当我运行时出现以下错误sudo apt update：

Hit:1 https://dl.yarnpkg.com/debian stable InRelease
Hit:2 http://apt.postgresql.org/pub/repos/apt eoan-pgdg InRelease                                           
Err:2 http://apt.postgresql.org/pub/repos/apt eoan-pgdg InRelease             
  The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 7FCC7D46ACCC4CF8
Ign:3 https://download.rethinkdb.com/apt eoan InRelease 
Err:4 https://download.rethinkdb.com/apt eoan Release   
  404  Not Found [IP: 167.172.11.96 443]
Reading package lists... Done
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://apt.postgresql.org/pub/repos/apt eoan-pgdg InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 7FCC7D46ACCC4CF8
E: The repository 'https://download.rethinkdb.com/apt eoan Release' no longer has 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.

有什么想法可以消除这些错误吗？

我之前没有安装 postresql，不知道为什么它会出现在错误中。

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1 回答 1

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似乎有人设置了 PGDG 存储库，但没有安装 PostgreSQL。所以解决方法很简单：删除存储库配置。

如果存储库是按照 PostgreSQL 站点的说明设置的，那么解决方法应该像删除一样简单/etc/apt/sources.list.d/pgdg.list。

于 2020-11-22T04:55:34.273 回答