If an error message is displayed when you try to save the QR Code image you have created If an error message is displayed when you try to save the QR Code image you have created, there is a possibility that the app does not have permission to access the Album or Photos app.
Please allow access privileges to the Album or Photos app from the standard OS settings app.
The way to change the permission settings may vary depending on the OS and its version. In the case of Android devices, please note that there may be differences in the display name, etc. depending on the device.
Settings" application → "Apps you want to change permissions for" → "Photos" → "*All Photos
If you select "Selected Photos", you may not be able to save images, so be sure to select "All Photos".
(In the case of Android)
Settings" application -> "Apps and notifications" -> "Apps you want to change permissions for" -> "Permissions" -> "Files and media" -> Check "Allow access to media only
If you can't save the QR Code image even after changing the permissions If you are still unable to save QR Code images even after granting permissions, please check the free space on your device.