Extra libraries are required in addition to those for the installation of QTVCP for additional functionality
sudo apt-get install python3-pyqt5.qtwebengine
sudo apt-get install python3-numpy
sudo apt-get install python3-scipy
sudo apt-get install python3-matplotlib
sudo apt-get install python3-poppler-qt5
sudo apt-get install python3-PyQt5.QtSql
sudo apt-get install sqlite3 libsqlite3-dev
You may also want a SQLITE browser such as DB Browser for Sqlite3
sudo apt-get install sqlitebrowser