Error when "sudo upt-get update" in Ubuntu 18.04
Hit:1 https:/
Ign:2 http://
Hit:3 http://
Hit:4 http://
Hit:5 http://
Hit:6 http://
Ign:7 http://
Get:9 http://
Ign:10 http://
Get:11 http://
Hit:12 http://
Get:13 http://
Ign:14 http://
Get:15 http://
Get:16 http://
Hit:17 http://
Get:18 http://
Hit:19 http://
Err:20 http://
404 Not Found [IP: 91.189.95.83 80]
Err:21 http://
404 Not Found [IP: 91.189.95.83 80]
Err:22 http://
404 Not Found [IP: 91.189.95.83 80]
Get:23 http://
Get:24 http://
Get:25 http://
Get:26 http://
Get:27 http://
Get:28 http://
Reading package lists... Done
W: Skipping acquire of configured file 'stable/
E: The repository 'http://
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 'http://
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 'http://
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.
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