I make fresh install Hestia 1.1.0 (amd64), Debian 9.12, using this instructions:
wget https://raw.githubusercontent.com/hestiacp/hestiacp/release/install/hst-install.sh
bash hst-install.sh
I create test user, test db, then try to use button phpMyAdmin.
In browser I see message: Firefox cannot establish a connection to the server xx.xx.xx.xx (my server ip).
phpMyAdmin do not working.