In latest browsers, you may need to grant access to apps on your device to make proper scanning.
When it is asking for permission, please click "Allow".
If you accidentally block the access, you can reset it as shown in the following dialog. (Click the icon next to the address to bring up the UI.)
Note: The UI may vary according to different browsers and browser versions. The following shows the different UIs.
Permission dialog:
Site settings:
Permission dialog:
Site settings:
Permission dialog:
Site settings:
Permission dialog:
Site settings:
Permission dialog:
Site settings: