Cant install on Ubuntu 18.04, 404 on Repo

Couchbase Server
1

Isn’t supposed Ubuntu 18.04 supported?

$ sudo apt-get update
...
Err:19 http://packages.couchbase.com/releases/couchbase-server/community/deb bionic Release                                                                               
  404  Not Found [IP: 99.84.5.69 80]
E: The repository 'http://packages.couchbase.com/releases/couchbase-server/community/deb bionic 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.

$ sudo cat /etc/apt/sources.list.d/couchbase.list 
deb [ arch=amd64 ] http://packages.couchbase.com/releases/couchbase-server/enterprise/deb/ bionic bionic/main
deb [ arch=amd64 ] http://packages.couchbase.com/releases/couchbase-server/community/deb/ bionic bionic/main
deb http://packages.couchbase.com/ubuntu bionic bionic/main
2

Changing bionic to xenial works tho


echo '
deb [ arch=amd64 ] http://packages.couchbase.com/releases/couchbase-server/enterprise/deb/ xenial xenial/main
deb [ arch=amd64 ] http://packages.couchbase.com/releases/couchbase-server/community/deb/ xenial xenial/main
deb http://packages.couchbase.com/ubuntu xenial xenial/main
' | sudo tee /etc/apt/sources.list.d/couchbase.list
sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 6EF1EAC479CF7903
sudo apt-get update