使用 Proton VPN 进行 sudo apt update 时出现问题

Question

我收到此警告/错误

  The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 71EB474019940E11
Reading package lists... Done      
W: GPG error: https://repo.protonvpn.com/debian stable InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 71EB474019940E11
E: The repository 'https://repo.protonvpn.com/debian stable InRelease' 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.

当我跑步时，sudo apt update 我在谷歌上搜索并尝试解决它，但对我来说没有任何作用:(

任何帮助将不胜感激谢谢

Answer 1

从另一个类似的问题，我只想将其放在这里作为对我也有用的正确答案：

我确实用这个修复了它：

cd /etc/apt/sources.list.d

并删除了文件夹中的所有质子文件，就我而言：

sudo rm protonvpn-stable.list
sudo rm protonvpn-stable.list.distUpgrade
sudo rm protonvpn-stable.list.save