[Python] ModuleNotFoundError: No module named 'Quartz'

I'm trying to work on python3 and using mac. I have installed pyobjc-core and pyobjc, but the error said Quartz not found. I'm very new to this kind of installing. Is there any solution?

Here is my error from pycharm:

Traceback (most recent call last):
File "/Users/Thyme/PycharmProjects/DinosourBot/venv/lib/python3.6/site-packages/pyautogui/_pyautogui_osx.py", line 5, in <module>
import Quartz
ModuleNotFoundError: No module named 'Quartz'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/Users/Thyme/PycharmProjects/DinosourBot/Bot.py", line 2, in <module>
import pyautogui
File "/Users/Thyme/PycharmProjects/DinosourBot/venv/lib/python3.6/site-packages/pyautogui/__init__.py", line 110, in <module>
from . import _pyautogui_osx as platformModule
File "/Users/Thyme/PycharmProjects/DinosourBot/venv/lib/python3.6/site-packages/pyautogui/_pyautogui_osx.py", line 7, in <module>
assert False, "You must first install pyobjc-core and pyobjc: https://pyautogui.readthedocs.io/en/latest/install.html"
AssertionError: You must first install pyobjc-core and pyobjc: https://pyautogui.readthedocs.io/en/latest/install.html

Process finished with exit code 1

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