Install libopendbx1-pgsql by entering the following commands in the terminal:
sudo apt update sudo apt install libopendbx1-pgsql
PostgreSQL backend for OpenDBX
OpenDBX provides a simple and lightweight API for interfacing native relational database APIs in a consistent way. By using the OpenDBX API you don't have to adapt your program to the different database APIs by yourself. . This package contains the PostgreSQL backend.