I’ve updated my system to the latest Mac OS 10.15.1 codenamed Catalina. Well, it broke a couple of apps that I use regularly, Audacity and OBS. There are currently no updates from Audacity. However, OBS has a workaround in terms of a test build. You have to download it, and set the system preferences to allow the Mac OS to access the cameras (webcam) and audio devices (microphones). There are no official releases yet from neither Audacity and OBS projects. Maybe in a couple of months.