Man pages matching name imager::qrcode in section 3pm:

Imager::QRCode.3pm.en	debian 10 / libimager-qrcode-perl
Imager::QRCode.3pm.en	debian 11 / libimager-qrcode-perl
Imager::QRCode.3pm.en	debian 12 / libimager-qrcode-perl