Got some issues when I try to install some packages (pgadmin, prettynoemieCMS)

I got a YNH 3.8 that works nicely for more than 2 years… basicall Bozon, Nextcloud, PeerTube.

I now want to add Moodle and some features. I tried to install pgadmin, for the PostgreSQL, it failed all the time. I tried to install PrettyNoemie CMS, to have a nice welcome page that would allow me to direct new students and some visitors… The install went well… but when I try to login in the admin part, the pass never works. I’ve tried pass from my YNH admin account, the one askes for admin in the installation page (before you install it), … nothing. Don’t know what the matter is, but basically that’s my feedback right now.