Having encountered problems when installing Raspberry Pi OS Trixie on a Raspberry 4, here is a fix that works for me.
Install Diet-pi Trixie with RPI Installer (minimal install).
wget https://raw.githubusercontent.com/jeedom/core/master/install/install.sh
chmod +x install.sh
sed -i 's/\bntp\b/ntpsec/g' install.sh
sudo ./install.sh
Hello @olivier9 thanx for your post 
you should try with the specific branch Trixie, Jeedom staff replaced the ntp package by chrony
This should work best for Trixie, the master branch may be not fully compatible with Trixie.
wget https://raw.githubusercontent.com/jeedom/core/trixie/install/install.sh
chmod +x install.sh
sudo ./install.sh