I installed Laminas skeleton application and tried to make the album application work. But I am facing problems when loading a module, i.e. Laminas/Db. The database exists as described for the album app but … My php version is 8.2.12
Here the error :
Hello and welcome to our forums! 
Please check if the laminas-db component is installed. In the root of your project, check the file composer.json and look for the entry:
"laminas/laminas-db": "^2.19.0",
Check also the vendor directory for laminas/laminas-db.
During the installation of the skeleton application the following step is import:
Would you like to install database support (installs laminas-db)? y/NWe will be using laminas-db extensively in this tutorial, so hit “y” followed by “Enter”. You should see the following text appear:
Will install laminas/laminas-db (^2.8.1) When prompted to install as a module, select application.config.php or modules.config.php
Can the create Process fpr laminas be repeated for an existing installation without losing existing code
This would not work because the command composer create-project creates a new project. But this is not necessary. Have you checked if the entry for laminas-db in the composer.json is present?
If laminas-db is missing, run the following command:
composer require laminas/laminas-db