Can't access camera MacOS 10.15.7 Chrome 91.0.4472.114

[dennisjkane]

Even though I am able to access my built-in camera using Chrome (e.g. https://webcamtests.com/) I cannot access the camera using the webapp at https://trekhleb.dev/
I tried both apps at https://trekhleb.dev/machine-learning-experiments/#/
I checked my Chrome settings and the site is allowed access to my camera.