why i get "couldn't scan code" when i try to connect?

[agharaafat]

hello
now i'm used https://hub.docker.com/r/joaomirandas/whats2api
and docker run --name instance1 -p 8001:8000 joaomirandas/whats2api
the http://ip:8001 is working
http://ip:8001/83430/qrCode is working also and I can see the QR code
but when I'm open whatsapp from my phone and try to scan the qrcode i get "couldn't scan code. Make sure you're on web.whatsapp.com and scan again"

what's wrong?