Hi! I understand you want to access the live stream on the Televicentro TVC app using your Mac running OS X 10.15.7. Could you tell me a bit more about what you're experiencing? For example, do you have the app installed already? Are you trying to watch a live broadcast but encountering an error or connection issue?

Meanwhile, here’s how you can watch the live stream on your Mac:

1. The official Televicentro (TVC) app is primarily available for iOS and Android devices, so on a Mac, the best option is usually to use their website or stream via a browser.

2. Visit the official Televicentro website at https://www.televicentro.com/ where they offer live streaming of their programs, including news, sports, and entertainment.

3. Make sure your browser (Safari, Chrome, or Firefox) is up to date to support any streaming technology.

4. Check your internet connection is stable for uninterrupted streaming.

If you prefer using the app, since it's for mobile devices, you might consider using an iOS emulator, but that tends to be complicated and not always smooth on Mac OS X Catalina.

Please let me know if accessing the stream online works for you, or if you're running into any specific issues like buffering, errors, or account login problems. That way, I can help guide you further.