Install couchbase 6.5 on Ubuntu 20.4 fails with 403 Forbidden error


I wanted to install the current version (6.5 community) of the couchbase server on an Ubuntu 20.04 LTS (Focal Fossa). To do this, I followed the steps described at

Installing the metapackage worked.

# curl -O
# sudo dpkg -i ./couchbase-release-1.0-amd64.deb

However, it was then not possible to update the package list.

# sudo apt-get update
Hit:1 focal InRelease
Hit:2 focal InRelease              
Hit:3 focal-security InRelease    
Hit:4 focal InRelease
Hit:5 focal-updates InRelease
Hit:6 focal InRelease
Hit:7 focal-backports InRelease
Hit:8 focal-updates InRelease      
Hit:9 focal-security InRelease
Hit:10 focal-backports InRelease   
Err:11 focal InRelease
  403  Forbidden [IP: 2600:9000:21c3:6200:d:a436:d140:93a1 80]
Reading package lists... Done
E: Failed to fetch  403  Forbidden [IP: 2600:9000:21c3:6200:d:a436:d140:93a1 80]
E: The repository ' focal 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.

Did I miss anything?

Best regards

hi, ubuntu 20.04 is not a supported version for Couchbase, the currently supported versions are the following:
Ubuntu 18.04 and 16.04
I went through the same steps, and received the same errors when attempting to install on 20.04