It's in the PR Portal, where you have to upload the photo.Where does it say? Can you share the link pls?
This is from my account that was created by IRCC & provided the credentials to login (so it's not in any public website):
"You need to upload a photo of XXXXXXX taken within the last 12 months. We’ll use it to make their permanent resident card. Please upload a JPEG or PNG file. You may upload a photo from your computer or take a photo with your mobile device. If required, you can find out more about photo requirements."