Problems with importing PyQt5 modules, the programs crashes: Process finished with exit code -1073741819 (0xC0000005)

Even if I create a file with this only line:

from PyQt5 import QtCore

it crashes and gives me the error I reported in the title. This didn't happen before today, and I don't get why. I'm using PyCharm and I installed PyQt5 via its Settings-->Project: Project_Name-->Project interpreter

Can someone argue what's happening?

SOLVED: Just uninstalled and re-installed PyCharm