please find below:
Ign:6 https://repo.gluu.org/ubuntu focal InRelease
Err:7 https://repo.gluu.org/ubuntu focal Release
Could not wait for server fd - select (11: Resource temporarily unavailable) [IP: 188.8.131.52 443]
Reading package lists... Done
E: The repository 'https://repo.gluu.org/ubuntu 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.