The OverConstrainedError can occur if the selected media device can no longer be accessed, either because another application is accessing the media device or there is a problem with the device’s connection to the computer.

Please take these steps to resolve the error:

1. Reboot the computer or mobile device.
2. Check to ensure that no other programs which may be accessing the webcam or microphone are running.
3. If the webcam and/or microphone are external, unplug it and plug it back in.
4. If the issue persists, try accessing the assessment using an incognito or private browsing window.