If you see Runtime error R6025 - Pure Virtual Function Call message when running an app, then one of these fixes is sure to help you.

This post explains how to use a Python function call, how to pass variables, and how to use these features to build powerful, flexible programs.

The call in python is inside another function, and using the example Eello World files I can reproduce the issue. The normal call works [ eel.say_hello_js () in python ], but inside a larger function ...