Mam nastepujace bledy przy probie sudo apt update:
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.
E: Failed to fetch https://linux.teamviewer.com/deb/dists/development/InRelease 403 Forbidden [IP: 52.85.121.106 443]
E: The repository 'https://linux.teamviewer.com/deb development 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.
E: The repository 'http://ppa.launchpad.net/alexlarsson/flatpak/ubuntu groovy 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.