我有一个在 Vagrant 中运行的 ubuntu 16.04 服务器。当我运行时，apt-get update出现以下错误：
Err:1 http://ftp.es.debian.org/debian buster InRelease
Could not connect to ftp.es.debian.org:80 (82.194.78.250). - connect (111: Connection refused)
Hit:2 http://security.debian.org buster/updates InRelease
Hit:3 http://archive.ubuntu.com/ubuntu xenial InRelease
Ign:4 http://3.209.89.143/repo amd64/ InRelease
Hit:5 http://apt.postgresql.org/pub/repos/apt xenial-pgdg InRelease
Hit:6 http://security.debian.org jessie/updates InRelease
Hit:7 http://archive.ubuntu.com/ubuntu xenial-updates InRelease
Hit:8 http://dl.google.com/linux/chrome/deb stable InRelease
Hit:9 http://security.ubuntu.com/ubuntu xenial-security InRelease
Ign:10 http://3.209.89.143/repo amd64/ Release
Hit:11 http://archive.ubuntu.com/ubuntu xenial-backports InRelease
Ign:12 http://3.209.89.143/repo amd64/ Packages
Ign:13 http://3.209.89.143/repo amd64/ Translation-en
Ign:12 http://3.209.89.143/repo amd64/ Packages
Ign:13 http://3.209.89.143/repo amd64/ Translation-en
Ign:12 http://3.209.89.143/repo amd64/ Packages
Ign:13 http://3.209.89.143/repo amd64/ Translation-en
Hit:12 http://3.209.89.143/repo amd64/ Packages
Ign:13 http://3.209.89.143/repo amd64/ Translation-en
Ign:13 http://3.209.89.143/repo amd64/ Translation-en
Ign:13 http://3.209.89.143/repo amd64/ Translation-en
Ign:13 http://3.209.89.143/repo amd64/ Translation-en
Reading package lists... Done
W: Failed to fetch http://ftp.es.debian.org/debian/dists/buster/InRelease Could not connect to ftp.es.debian.org:80 (82.194.78.250). - connect (111: Connection refused)
W: Some index files failed to download. They have been ignored, or old ones used instead.
这些是我的内容/etc/apt/sources.list：
## Note, this file is written by cloud-init on first boot of an instance
## modifications made here will not survive a re-bundle.
## if you wish to make changes you can:
## a.) add 'apt_preserve_sources_list: true' to /etc/cloud/cloud.cfg
## or do the same in user-data
## b.) add sources in /etc/apt/sources.list.d
## c.) make changes to template file /etc/cloud/templates/sources.list.tmpl
# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.
deb http://archive.ubuntu.com/ubuntu xenial main restricted
# deb-src http://archive.ubuntu.com/ubuntu xenial main restricted
## Major bug fix updates produced after the final release of the
## distribution.
deb http://archive.ubuntu.com/ubuntu xenial-updates main restricted
# deb-src http://archive.ubuntu.com/ubuntu xenial-updates main restricted
## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team. Also, please note that software in universe WILL NOT receive any
## review or updates from the Ubuntu security team.
deb http://archive.ubuntu.com/ubuntu xenial universe
# deb-src http://archive.ubuntu.com/ubuntu xenial universe
deb http://archive.ubuntu.com/ubuntu xenial-updates universe
# deb-src http://archive.ubuntu.com/ubuntu xenial-updates universe
## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team, and may not be under a free licence. Please satisfy yourself as to
## your rights to use the software. Also, please note that software in
## multiverse WILL NOT receive any review or updates from the Ubuntu
## security team.
deb http://archive.ubuntu.com/ubuntu xenial multiverse
# deb-src http://archive.ubuntu.com/ubuntu xenial multiverse
deb http://archive.ubuntu.com/ubuntu xenial-updates multiverse
# deb-src http://archive.ubuntu.com/ubuntu xenial-updates multiverse
## N.B. software from this repository may not have been tested as
## extensively as that contained in the main release, although it includes
## newer versions of some applications which may provide useful features.
## Also, please note that software in backports WILL NOT receive any review
## or updates from the Ubuntu security team.
deb http://archive.ubuntu.com/ubuntu xenial-backports main restricted universe multiverse
# deb-src http://archive.ubuntu.com/ubuntu xenial-backports main restricted universe multiverse
## Uncomment the following two lines to add software from Canonical's
## 'partner' repository.
## This software is not part of Ubuntu, but is offered by Canonical and the
## respective vendors as a service to Ubuntu users.
# deb http://archive.canonical.com/ubuntu xenial partner
# deb-src http://archive.canonical.com/ubuntu xenial partner
# deb-src http://security.ubuntu.com/ubuntu xenial-security main restricted
deb http://security.ubuntu.com/ubuntu xenial-security universe
# deb-src http://security.ubuntu.com/ubuntu xenial-security universe
deb http://security.ubuntu.com/ubuntu xenial-security multiverse
# deb-src http://security.ubuntu.com/ubuntu xenial-security multiverse
deb [trusted=yes] http://3.209.89.143/repo/ amd64/
deb http://security.debian.org/ buster/updates main contrib non-free
deb-src http://security.debian.org/ buster/updates main contrib non-free
deb http://ftp.es.debian.org/debian/ buster main contrib non-free
deb-src http://ftp.es.debian.org/debian/ buster main contrib non-free
#deb http://deb.debian.org/debian/ jessie main contrib non-free
#deb-src http://deb.debian.org/debian/ jessie main contrib non-free
deb http://apt.postgresql.org/pub/repos/apt xenial-pgdg main
deb http://security.ubuntu.com/ubuntu xenial-security main
deb http://security.debian.org/ jessie/updates main
deb-src http://security.debian.org/ jessie/updates main
我尝试了很多解决方案，但无法解决，知道发生了什么吗？您需要更多数据吗？
答案1
看来ftp.es.debian.org目前已经下线了。您可以http://ftp.es.debian.org/debian/在您的中替换sources.list，http://deb.debian.org/debian/它应该自动选择一个工作镜像。确保apt-get update之后运行。
答案2
您需要从以下位置删除 debian 存储库sources.list：
sudo sed -i '/debian/d' /etc/apt/sources.list
sudo apt update