Err:10 https://packages.cloud.google.com/apt kubernetes-xenial Release
404 Not Found [IP: 142.250.67.46 443]
Reading package lists… Done
E: The repository ‘http://apt.kubernetes.io kubernetes-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.

deb http://apt.kubernetes.io/ kubernetes-xenial main

Install error of Kubernetes