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 | 1 | initial version |
I'm not entirely sure what the problem with the ftp.nsysu.edu.tw host is, but at least for packages.ros.org you don't appear to have the correct key imported.
Refer to #q325039 for instructions on how to fix that.
Then run a sudo apt update again.
| | 2 | No.2 Revision |
I'm not entirely sure what the problem with the ftp.nsysu.edu.tw host is, but at least for packages.ros.org you don't appear to have the correct key imported.
Refer to #q325039 for instructions on how to fix that.
Then run a sudo apt update again.
Edit:
and try
sudo apt updateit still not works:E: The repository 'http://ftp.nsysu.edu.tw/Ubuntu/ubuntu xenial 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. E: The repository 'http://ftp.nsysu.edu.tw/Ubuntu/ubuntu xenial-updates 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. E: The repository 'http://ftp.nsysu.edu.tw/Ubuntu/ubuntu xenial-backports 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. E: The repository 'http://ftp.nsysu.edu.tw/Ubuntu/ubuntu xenial-security 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.
This is not a problem with the ROS package repositories, but with the ftp.nsysu.edu.tw host.
Do you know what ftp.nsysu.edu.tw is? Try using a different host.
In any case: the problem with the ROS package repositories seems to be fixed: you now have the correct key imported.
| | 3 | No.3 Revision |
I'm not entirely sure what the problem with the ftp.nsysu.edu.tw host is, but at least for packages.ros.org you don't appear to have the correct key imported.
Refer to #q325039 for instructions on how to fix that.
Then run a sudo apt update again.
Edit:
and try
sudo apt updateit still not works:E: The repository 'http://ftp.nsysu.edu.tw/Ubuntu/ubuntu xenial 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.E: The repository 'http://ftp.nsysu.edu.tw/Ubuntu/ubuntu xenial-updates 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. E: The repository 'http://ftp.nsysu.edu.tw/Ubuntu/ubuntu xenial-backports 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. E: The repository 'http://ftp.nsysu.edu.tw/Ubuntu/ubuntu xenial-security 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.
This is not a problem with the ROS package repositories, but with the ftp.nsysu.edu.tw host.
Do you know what ftp.nsysu.edu.tw is? Try using a different host.
In any case: the problem with the ROS package repositories seems to be fixed: you now have the correct key imported.
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