Solve: PHP Fatal error: Uncaught Error: Class QR. ▷ List of libs which containing the class QR

MSP\TwoFactorAuth\Controller\Adminhtml\Google\Qr

This class belongs to the vendor Msp and the package Twofactorauth

This class belongs to the vendor Nocksapp and the package Nocks-sdk-php

This class belongs to the vendor Luscio and the package Tools

This class belongs to the vendor Vinala and the package Kernel

This class belongs to the vendor Liguangchun and the package Think-library

This class belongs to the vendor Zijol and the package Helper

This class belongs to the vendor Drakeba and the package Moodle-core

This class belongs to the vendor Nhutnguyenvu and the package Magento237

This class belongs to the vendor Bobcoders9 and the package Cashier

This class belongs to the vendor Payvision and the package Payvision-sdk-php