Hello @antonio,
Did you follow the instructions outlined here?
https://help.passbolt.com/hosting/install/pro/ubuntu-18-04-bionic-beaver.html
There is a template to fill out request for help for installation issues, please provide the information that is requested in this list. This is required for us to help you:
Checklist
[ ] I have read intro post: About the Installation Issues category
[ ] I have read the tutorials, help and searched for similar issues
[ ] I provide relevant information about my server (component names and versions, etc.)
[ ] I provide a copy of my logs and healthcheck
[ ] I describe the steps I have taken to trouble shoot the problem
[ ] I describe the steps on how to reproduce the issue