The repository does not have a Release file.

[wajika]

ubuntu: 20.04

sudo apt update
------------------------------
Reading package lists... Done
E: The repository 'https://deb.nodesource.com/node_17.x focal 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.

https://deb.nodesource.com/node_17.x/dists/focal/

I see that the focal branch exists, why does apt prompt that it cannot be found? Has anyone encountered a similar situation?