apt-get アップグレードの実行中、または apt-get を使用して何かをインストール中にエラーが発生しました。

Debian 9.0 サーバーに何かをインストールまたはアップグレードしようとするとエラーが発生します。

これは端末が私に返すものです。

root@engelmar:~# apt-get upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
You might want to run 'apt --fix-broken install' to correct these.
The following packages have unmet dependencies:
 cdebconf : Depends: libdebian-installer4 (>= 0.110) but it is not installed
            Depends: libtextwrap1 but it is not installed
 libc-bin : Depends: libc6 (< 2.25) but 2.28-10 is installed
 libc-dev-bin : Depends: libc6 (< 2.25) but 2.28-10 is installed
 libc6-dev : Depends: libc6 (= 2.24-11+deb9u4) but 2.28-10 is installed
E: Unmet dependencies. Try 'apt --fix-broken install' with no packages (or specify a solution).
root@engelmar:~# apt --fix-broken install
Reading package lists... Done
Building dependency tree
Reading state information... Done
Correcting dependencies... Done
The following packages were automatically installed and are no longer required:
  linux-libc-dev python-all sysstat
Use 'apt autoremove' to remove them.
The following additional packages will be installed:
  libdebian-installer4 libtextwrap1
The following packages will be REMOVED:
  build-essential g++ g++-6 libc-bin libc-dev-bin libc6-dev libexpat1-dev libpython-all-dev libpython-dev libpython2.7-dev libstdc++-6-dev python-all-dev python-dev
  python2.7-dev
The following NEW packages will be installed:
  libdebian-installer4 libtextwrap1
WARNING: The following essential packages will be removed.
This should NOT be done unless you know exactly what you are doing!
  libc-bin
0 upgraded, 2 newly installed, 14 to remove and 0 not upgraded.
5 not fully installed or removed.
Need to get 0 B/201 kB of archives.
After this operation, 102 MB disk space will be freed.
You are about to do something potentially harmful.
To continue type in the phrase 'Yes, do as I say!'
 ?] Yes, do as I say!
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
        LANGUAGE = "pt_BR:pt:en",
        LC_ALL = (unset),
        LANG = "pt_BR.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
locale: Cannot set LC_ALL to default locale: Arquivo ou diretório não encontrado
debconf: delaying package configuration, since apt-utils is not installed
dpkg: error processing package debconf (--configure):
 package is in a very bad inconsistent state; you should
 reinstall it before attempting configuration
Errors were encountered while processing:
 debconf
E: Sub-process /usr/bin/dpkg returned an error code (1)
root@engelmar:~#

誰もが問題を解決する方法を知っていますか？