vline.js from running. To verify that exceptions are not causing a problem you can pause on exceptions in Chrome or Firefox.
Whenever you use a
vline.Promise, you should always make sure to handle the failure case, either by using
fail, or by including a failure callback when using
then. See the
vline.Promise documentation for more details and examples.
This exception occurs when
vline.js fails to access to the camera. Verify that you have a camera attached to your computer and that you gave access to the camera when it was requested by the browser. In Chrome, if the page is served over HTTPS and you deny access to the camera, that deny setting will be saved as described in this Chrome support article.
To verify your media permissions are correct, make sure the settings look like this:
If you are still stuck, take a look at our support page. We're always happy to help.