Kali Linuxへのターミネータのインストール（apt-getエラー）

カリLinuxや一般的なLinuxを初めて使ってみたので、コマンドを入力してみました。そのため、他のターミネーターをインストールすることができましたが、驚くべきことにターミネーターでエラーが発生しました。

私が入力したコマンド

apt-get install terminator

エラーが発生しました。

Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following additional packages will be installed:
  gir1.2-keybinder-3.0 libkeybinder-3.0-0 python-gi-cairo python-psutil
Suggested packages:
  python-psutil-doc
The following NEW packages will be installed:
  gir1.2-keybinder-3.0 libkeybinder-3.0-0 python-gi-cairo python-psutil terminator
0 upgraded, 5 newly installed, 0 to remove and 410 not upgraded.
Need to get 877 kB of archives.
After this operation, 3,558 kB of additional disk space will be used.
Do you want to continue? [Y/n] y
Err:1 http://http.kali.org/kali kali-rolling/main amd64 libkeybinder-3.0-0 amd64 0.3.2-1
  404  Not Found [IP: 192.99.200.113 80]
Err:2 http://http.kali.org/kali kali-rolling/main amd64 gir1.2-keybinder-3.0 amd64 0.3.2-1
  404  Not Found [IP: 192.99.200.113 80]
Err:3 http://http.kali.org/kali kali-rolling/main amd64 python-gi-cairo amd64 3.26.1-2
  404  Not Found [IP: 192.99.200.113 80]
Err:4 http://http.kali.org/kali kali-rolling/main amd64 python-psutil amd64 5.4.2-1
  404  Not Found [IP: 192.99.200.113 80]
Err:5 http://http.kali.org/kali kali-rolling/main amd64 terminator all 1.91-1
  404  Not Found [IP: 192.99.200.113 80]
E: Failed to fetch http://http.kali.org/kali/pool/main/k/keybinder-3.0/libkeybinder-3.0-0_0.3.2-1_amd64.deb  404  Not Found [IP: 192.99.200.113 80]
E: Failed to fetch http://http.kali.org/kali/pool/main/k/keybinder-3.0/gir1.2-keybinder-3.0_0.3.2-1_amd64.deb  404  Not Found [IP: 192.99.200.113 80]
E: Failed to fetch http://http.kali.org/kali/pool/main/p/pygobject/python-gi-cairo_3.26.1-2_amd64.deb  404  Not Found [IP: 192.99.200.113 80]
E: Failed to fetch http://http.kali.org/kali/pool/main/p/python-psutil/python-psutil_5.4.2-1_amd64.deb  404  Not Found [IP: 192.99.200.113 80]
E: Failed to fetch http://http.kali.org/kali/pool/main/t/terminator/terminator_1.91-1_all.deb  404  Not Found [IP: 192.99.200.113 80]
E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?

私も試しました

sudo apt update

エラーが発生しました。

Get:1 http://kali.download/kali kali-rolling InRelease [30.5 kB]
Err:1 http://kali.download/kali kali-rolling InRelease
  The following signatures were invalid: EXPKEYSIG ED444FF07D8D0BF6 Kali Linux Repository <[email protected]>
Fetched 30.5 kB in 17s (1,823 B/s)
Reading package lists... Done
Building dependency tree       
Reading state information... Done
424 packages can be upgraded. Run 'apt list --upgradable' to see them.
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://kali.download/kali kali-rolling InRelease: The following signatures were invalid: EXPKEYSIG ED444FF07D8D0BF6 Kali Linux Repository <[email protected]>
W: Failed to fetch http://http.kali.org/kali/dists/kali-rolling/InRelease  The following signatures were invalid: EXPKEYSIG ED444FF07D8D0BF6 Kali Linux Repository <[email protected]>
W: Some index files failed to download. They have been ignored, or old ones used instead.

したがって、何らかの提案や解決策があれば感謝します。質問が専門的でない場合は、投票をしたり、質問を報告したりしないでください。質問を改善するのに役立ちます。時間とエネルギーをありがとうございます。