Metricbeat 7.12.0: Empty modules list

[orfeas2021 (Orfeas Aidonopoulos)]

Hi!
I use beat agents to monitor applications deployed on Openstack VMs.
I Installed and configured metricbeat (7.12.0) but when I run metricbeat modules list the list is empty.

while in my elk-master node I have installed also metricbeat and modules appear properly.

Thanks in advance