GPG Error when update

[Pedro_Mendez]

when i want to use apt-get, i get following error:

E: The repository ‘http://download.opensuse.org/repositories/home:/strycore/xUbuntu_16.04 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.
W: GPG error: ://apt.connectify.me speedify InRelease: The following signatures couldn’t be verified because the public key is not available: NO_PUBKEY 632EF1555E69ECD1
E: The repository ‘://apt.connectify.me speedify InRelease’ is not signed.
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.

How can fix ?

[wjt]

Assuming you are not using a podman or toolbox container, you will not be able to install packages with apt:

Technical introduction

There is some documentation on developing in containers here:

Developers & technicians

This error message is a generic message from apt. If you search the web for “apt NO_PUBKEY” you will find many articles about it.