[CURRENT ISSUE] Sims 4 crashing since November 2020 update, NOT CC/Mod related

Hi, I also have the same issue on my MacBook Air. Never happened before. My active house's main entrance is on the second floor, for some reason my sim began to fail to enter his own house because he cannot use the stairs to go upstairs. Rest of the household also cannot leave the house because of the same issue. When I repeatedly assign action to go upstairs game crashed. I used to play with this house for a while before November update and everything was fine. I have attached the config and last crash files to this message. Thank you in advance!