beeware not working?

Question

Python

Installed beeware, completely according to the instructions from the official site. Further wrote

import toga
from toga.style import Pack
from toga.style.pack import COLUMN, ROW


class Generator(toga.App):
    def startup(self):
        mainBox = toga.Box()

Error, toga.style module not found
I have Windows 10 64 bit + amd. Python 32 bit version 3.7.8