我无法安装新的软件包或将现有软件包更新为 Linux-image-4.15.0-32-generic、Linux-image-4.15.0-34-generic 和 Linux-image-4.15.0-38-generic。错误信息截图
我尝试了这里提供的解决方案，但并没有解决问题：我在 18.04 LTS 上的包管理器中遇到了问题
有没有办法可以解决这个问题而不格式化我的电脑？谢谢
编辑：运行时的完整消息sudo apt update：
sudo apt update Get:1 http://dl.google.com/linux/chrome/deb stable InRelease [235 B] Err:1 http://dl.google.com/linux/chrome/deb stable InRelease
Clearsigned file isn't valid, got 'NOSPLIT' (does the network require authentication?) Hit:2 http://archive.ubuntu.com/ubuntu bionic InRelease
Hit:3 http://ppa.launchpad.net/fish-shell/release-2/ubuntu bionic InRelease
Hit:5 http://archive.ubuntu.com/ubuntu bionic-updates InRelease
Hit:6 http://archive.ubuntu.com/ubuntu bionic-backports InRelease
Hit:7 http://ppa.launchpad.net/git-core/ppa/ubuntu bionic InRelease
Get:4 http://deb.playonlinux.com precise InRelease [2,592 B]
Hit:8 https://dl.winehq.org/wine-builds/ubuntu bionic InRelease
Hit:9 https://packages.microsoft.com/repos/vscode stable InRelease
Hit:10 http://archive.ubuntu.com/ubuntu bionic-security InRelease
Ign:11 https://download.docker.com/linux/ubuntu (lsb_release InRelease
Hit:12 http://ppa.launchpad.net/persepolis/ppa/ubuntu bionic InRelease
Hit:13 https://download.sublimetext.com apt/stable/ InRelease
Hit:14 https://download.docker.com/linux/ubuntu bionic InRelease
Err:4 http://deb.playonlinux.com precise InRelease
The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 73F0D6E88E3D6C3A Hit:15 http://ppa.launchpad.net/zeal-developers/ppa/ubuntu bionic InRelease
Err:16 https://download.docker.com/linux/ubuntu (lsb_release Release
404 Not Found [IP: 52.222.253.156 443] Reading package lists... Done
E: Failed to fetch http://dl.google.com/linux/chrome/deb/dists/stable/InRelease Clearsigned file isn't valid, got 'NOSPLIT' (does the network require authentication?) E: The repository 'http://dl.google.com/linux/chrome/deb stable InRelease' is no longer 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. W: GPG error: http://deb.playonlinux.com precise InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 73F0D6E88E3D6C3A E: The repository 'http://deb.playonlinux.com precise 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. E: The repository 'https://download.docker.com/linux/ubuntu (lsb_release 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.