GPG error after adding hashicorp repo

[ranvijaysin]

W: GPG error: https://apt.releases.hashicorp.com focal InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY AA16FCBCA621E701
E: The repository 'https://apt.releases.hashicorp.com focal InRelease' is not signed.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.

[LokendraDevOps]

Get:1 file:/usr/local/zoomdebs ./ InRelease
Ign:1 file:/usr/local/zoomdebs ./ InRelease
Get:2 file:/usr/local/zoomdebs ./ Release [816 B]
Get:2 file:/usr/local/zoomdebs ./ Release [816 B]
Get:3 file:/usr/local/zoomdebs ./ Release.gpg
Ign:3 file:/usr/local/zoomdebs ./ Release.gpg
Hit:4 https://dl.winehq.org/wine-builds/ubuntu focal InRelease
Hit:5 https://dl.google.com/linux/chrome/deb stable InRelease
Hit:6 http://archive.ubuntu.com/ubuntu mantic InRelease
Hit:7 http://security.ubuntu.com/ubuntu mantic-security InRelease
Hit:8 http://archive.ubuntu.com/ubuntu mantic-updates InRelease
Hit:9 http://archive.ubuntu.com/ubuntu mantic-backports InRelease
Ign:10 https://apt.releases.hashicorp.com mantic InRelease
Err:11 https://apt.releases.hashicorp.com mantic Release
404 Not Found [IP: 108.158.221.108 443]
Hit:12 https://screenrec.com/download/ubuntu stable InRelease
Reading package lists... Done
E: The repository 'https://apt.releases.hashicorp.com mantic 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.