Reproduction steps:
I didn't test other demos so far. However, I don't think that it's QR reader-specific, because I've experienced similar problems with a custom reader (QR + EAN-13).
FYI: I've had similar problems (same error in console) when I called BrowserCodeReader.decodeFromInputVideoDevice method before video element was created in DOM.
Browser information:
Microsoft Edge 41.16299.666.0
Microsoft EdgeHTML 16.16299
Could be related to #108
Seems to be fixed in 0.12.3!
Thanks for the patience @mc-suchecki , if you think it's not fixed feel free to reopen the issue, we still have things to do about the restarting system.
This thread has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.