Pop-Up Windows not working

Hi there, when I try to use a script that utilizes a pop-up panel, for example in Rainer’s (Mekkablue) Alignment Manager, nothing happens. I updated the folder in GitHub, still nothing.

FYI I get this error message in the Marco Panel:

Traceback (most recent call last):
File “Alignment Manager.py”, line 8
import vanilla
File “init.py”, line 6
from vanilla.vanillaColorWell import ColorWell
File “vanillaColorWell.py”, line 5
from AppKit import NSColorWellStyleDefault, NSColorWellStyleMinimal, NSColorWellStyleExpanded
ImportError: cannot import name ‘NSColorWellStyleDefault’ from ‘AppKit._AppKit’ (/Users/kimmykirkwood/Library/Application Support/Glyphs 3/Repositories/GlyphsPythonPlugin/Python.framework/Versions/3.9/lib/python3.9/site-packages/AppKit/_AppKit.cpython-39-darwin.so)

Please remove and re-install the glyphs-python and vanilla module in the plugin manager.