In the log, we could see following messages:
12:31:50.864 - error: E: The repository ‘https://packagecloud.io/AtomEditor/atom/any any InRelease’ is not signed.
12:31:50.864 - info: Event: undefined - error is: E: The repository ‘https://packagecloud.io/AtomEditor/atom/any any InRelease’ is not signed.
12:31:50.864 - error: N: Updating from such a repository can’t be done securely, and is therefore disabled by default.
12:31:50.864 - info: Event: undefined - error is: N: Updating from such a repository can’t be done securely, and is therefore disabled by default.
12:31:50.864 - error: N: See apt-secure(8) manpage for repository creation and user configuration details.
12:31:50.864 - info: Event: undefined - error is: N: See apt-secure(8) manpage for repository creation and user configuration details.
12:31:50.869 - info:
12:31:50.877 - error: command error code: 100
12:31:50.877 - info: Event: - error code is: 1100
12:31:50.877 - error: command terminated with error
12:31:50.879 - error: Install pre check Access to APT repository and ability to install Debian packages with it. verify failed.
12:31:50.880 - info: Precheck is complete: PREREQUISITE_APT_HOST, Duration: 00:00:13
12:31:50.880 - info: Event: Precheck action ended: PREREQUISITE_APT_HOST - 0 - Access to APT repository and ability to install Debian packages with it. - failed
12:31:50.884 - error: Access to APT repository and ability to install Debian packages with it.: Apt repository check failure (1. sudo -S apt-get update && sudo -S apt-get check; 2. dpkg --audit).
Please manually fix the apt repository error first, make sure the following commands pass. Then reinstall with SDK Manager.