Problem installing carbonio CE

Hello,

After trying (with no success) to install zcs 9 from zextras, I try to install Carbonio CE on an Ubuntu 20.04 fresh install.

After all requirements were OK I donwload and execute the install script :

wget https://repo.zextras.io/inst_repo_ubuntu.sh

All went OK and a new repo is added. I try to install the software with :

apt install service-discover-server \
carbonio-directory-server \
carbonio-proxy \
carbonio-webui carbonio-files-ui \
carbonio-mta \
carbonio-appserver \
carbonio-user-management \
carbonio-files-ce carbonio-files-db \
carbonio-storages-ce \
carbonio-preview-ce \
carbonio-docs-connector-ce carbonio-docs-editor \
carbonio-prometheus  2>&1 | tee INSTALL.LOG

In INSTALL.LOG I see that some users/groups were created OK, and many messages like :

======================================================
Carbonio Docs Editor installed successfully!
You must run pending-setups to configure it correctly.
======================================================

But when I try to run (as root) "pending-setups" I get a question :

pending-setups
Insert the cluster credential password ?

As I do not know that password I key a "password" in and get weird messages :

service-discover: error: unable to open /etc/zextras/service-discover/cluster-credentials.tar.gpg: cannot find Cluster credential in /etc/zextras/service-discover/cluster-credentials.tar.gpg, please copy the file from the existing server or upload it to LDAP
Cannot access to bootstrap token

The file /etc/zextras/service-discover/cluster-credentials.tar.gpg is not there.

What can I do ?

Regards

JP P