Flask executable made using PyInstaller does not show up in the taskbar

I created an executable for a flask app to run locally using this line of code pyinstaller -w -F --add-data "templates;templates" --add-data "static;static" app.py. When I run it, it runs correctly and everything but I can't see the app running on my task bar. If I open my task manager, I can see it there. Is there a way to show it on the task bar?