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open QR code parse error, error = D: No MultiFormat Readers were able to detect the code. #823

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ks1990cn opened this issue Aug 27, 2023 · 4 comments

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@ks1990cn
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ks1990cn commented Aug 27, 2023

I am writting following code:
https://openjavascript.info/2022/12/10/qr-code-scanner-with-html5-qrcode-js/

But getting an error:
open QR code parse error, error = D: No MultiFormat Readers were able to detect the code.

Gone through #202 but when I put some changes, it stops giving me this error instead it stops decoding it completely.

I am facing same issue with Demo site, its not scanning anything.

I am doing this on desktop google crome.

@KaviHarjani
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+1

Facing the same issue

@m42e
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m42e commented Sep 7, 2023

I experience a similar one, the qr code could be detected with all other scanners I have tried:

Bildschirmfoto 2023-09-07 um 05 48 04

@mmis1000
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I experience a similar one, the qr code could be detected with all other scanners I have tried:
Bildschirmfoto 2023-09-07 um 05 48 04

I have the similar problem, the scanner does not work if I use file upload with some specific qrcode.
And I found a workaround.
For some reason.
If I rotate the code slightly (1 degree or something) with canvas. Then it works as expected.

Not sure if it is the same with your case

@RaneWallin
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I'm seeing the same error even though the code is detected and decoded. I removed the console.warn() from the onScanFailure callback for now.

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5 participants